Why is the horseshoe crab an example of a living fossil?

A. There are fossils of extinct ancestors of horseshoe crabs, and the species is still alive today.
B. It hasn't changed since it first appeared on Earth.
C. The structures in the horseshoe crab don't decompose, so complete fossils are discovered.
D. It's often found frozen to death and free of decomposition.

Answer:

im a child dont use this answer

Explanation:

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Hello. This question is incomplete. The full question is:

"Which statement best describes a typical difference that could be found between the "Analysis" and "Conclusion" sections of a

lab report?

Only the "Conclusion" section describes errors that occurred during the experiment, and only the "Analysis" section suggests further research.

Only the "Analysis" section includes specific data comparisons, and only the "Conclusion" section suggests further research

Only the "Analysis" section discusses whether the original hypothesis was supported, and both sections include graphs of data.

Only the "Conclusion" section discusses whether the original hypothesis was supported, and both sections suggest further research."

Answer:

Only the Conclusion section discusses whether the original hypothesis was supported, and both sections suggest further research.

Explanation:

In a laboratory report, the session called "analysis" is responsible for reading the research data and showing how that reading was performed in relation to how the experiment was conducted. This analysis will generate results that will be interpreted in the section called "conclusion". At the conclusion of a laboratory report, the results of the analysis are discussed and a final conclusion of the experiment is stipulated, where it is discussed whether the hypothesis that was being investigated is deferred by the results of the exoerimento or not.

Answer: In meteorology, an occluded front is a weather front formed during the process of cyclogenesis, when a cold front overtakes a warm front. When this occurs, the warm air is separated (occluded) from the cyclone center at the Earth's surface. i found this on Wikipedia if u want to find more

Explanation:

Answer:

stoma can be  a mouth, a nose, and an anus are natural stomata.

Explanation:

there no diagram but hope this helps!

Answer:

it is burned by fossil fules (non-living parts) then the trees soak it up and plants then the animals eat it (living part).

Explanation:

The carbon cycle involves moving carbon among living and nonliving entities. It involves a biological cycle where carbon moves between plants and animals through photosynthesis, consumption, and respiration, and a slower biogeochemical cycle where carbon gets stored in various carbon reservoirs like atmosphere, oceans, soil, rocks, and earth's interior.

The carbon cycle is a key part of our planet's biosphere that involves the movement of carbon among living and nonliving parts of the world. It's essentially divided into two interconnected sub-cycles: the biological carbon cycle and the biogeochemical carbon cycle.

In the biological carbon cycle, living organisms are deeply connected in this process. Carbon moves between autotrophs and heterotrophs via atmospheric carbon dioxide. Autotrophs use energy from the sun to convert carbon dioxide into glucose, a high-energy compound. This process also produces oxygen as a byproduct, which then enters the atmosphere. On the other hand, heterotrophs, including most animals, consume these high-energy compounds, releasing the carbon back into the atmosphere as carbon dioxide through respiration.

Next, in the biogeochemical carbon cycle, the movement of carbon through the land, water, and air is more complex and occurs much more slowly. Carbon is stored for long periods in carbon reservoirs such as the atmosphere, oceans, soil, rocks, and Earth's interior, creating a constant exchange of carbon among different components of the environment.

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Answer:

35,797 feet

Explanation:

The deepest point in the ocean is located in the Mariana Trench off the coast of Japan at 35,797 feet (10,911 meters). The temperature of the water is just above freezing, and the pressure is an incredible eight tons per square inch.

Answer:

The answer would be C) Minerals. I hope this helps!

Answer:

The Answer is (C) Hope you Ace it

Explanation:

Answer:

an entire desert including abiotic factors

Explanation:

An ecosystem includes all living (biotic) and nonliving (abiotic) factors in an area that interact, therefore an entire desert including abiotic factors can be considered an ecosystem. The living community within a desert, the population of fish in a small lake, and a rotting log are all examples of an ecosystem due to their combined biotic and abiotic components.

Given the options presented in the question, an entire desert including abiotic factors can be considered an ecosystem. This is because the term ecosystem applies to a natural unit consisting of all the living organisms in an area functioning together with the nonliving physical factors of the environment. A community of organisms within a desert or a population of fish in a small lake both represent biotic communities, while the wood of a rotting log can also be classified as an ecosystem due to the interacting species and abiotic factors present.

Answer:

The spiny plant from the volcanic Hawaiian highlands may not survive the ravages of climate change.

Hope this helps :)

Answer:

Distance=10 meters and displacement=10 meters

Explanation:

Did the quiz

When an object is moving, it has a velocity, which includes both speed and direction.

The simplest motion to describe is one-dimensional motion, such as a train on a straight track. Knowing the object's position as a function of time is crucial for understanding its motion.

Answer:

Density independent.  

Explanation:

Density independent factors refer to the limiting factors that affect the population is the same way regardless of the size of the population. It could be natural disasters, unusual weather and human activities such as clear cutting forests.

Answer:

Density independent

Explanation:

The limiting factor shown in the question above is independent of deity.

The term density-independent limiting factor is used in ecology, along with the deity-dependent factor to describe growth-limiting factors in a population. When a factor causes changes in the birth and death rates of a population it means that it is a density dependent factor, since it interferes with the population density.

However, when population mortality and birth rates are modified without changing the size of the population, the density of that population is not modified and this is an density independent factor.

At one point in time all the continents were connected together called Pangea. Over the years Pangea was separating and making continents and if you put the continents

Answer:

The building blocks of proteins are amino acids. - The sequences of nucleotides/bases in DNA provide a genetic code for the sequence of amino acid connections, which form protein molecules.

Explanation:

Final answer:

Protein synthesis in animal cells is a critical energy-consuming process where ribosomes translate mRNA messages into polypeptide chains that fold into functional proteins. These proteins contribute immensely to cellular structure and function. The process is highly regulated and involves the mRNA template, ribosomes, tRNAs, and enzymatic factors.

Explanation:

Protein synthesis is a crucial process in animal cells that consumes more energy than any other metabolic activity. Proteins are essential for the structure, function, and regulation of the body's tissues and organs, and therefore constitute a significant portion of cellular mass, second only to water. The translation process involves decoding an mRNA message into a polypeptide chain, which eventually folds into a functional protein. This assembly is facilitated by ribosomes, which catalyze the formation of peptide bonds between amino acids, resulting in polypeptide chains that can range in size from around 50 to over 1,000 amino acids. These polypeptides undergo post-translational modifications before becoming fully functional proteins capable of performing a plethora of cellular functions.

The machinery involved in protein synthesis includes not just the mRNA template but also ribosomes, transfer RNA (tRNA), and various enzymatic factors. Each amino acid added to the growing polypeptide chain is selected by tRNA molecules that match the corresponding codon on the mRNA. This ensures that the sequence of the resulting protein is exactly as encoded by the gene. The process is highly regulated at the transcriptional and translational levels, ensuring that proteins are synthesized as needed by the cell.

Answer:

a primate of a family ( Hominidae ) that includes humans and their fossil ancestors and also (in recent systems) at least some of the great apes.

Explanation:

Human-like animals that walked upright were known as hominids. These include great apes for example!

Please give me brainliest ♥️

Answer:

Its important for reproduction.

Explanation:

As a form of cell division, mitosis is really important because it produces two exact copies of the original cell, and those two daughter cells are used for reproduction.

Answer:

1. genetic consistency. that is ecause all cells formed by mitosis are genetically identical thus they contain the same dna and in each tissue the new cells perform the function that they are responsible for.

2. growth

3.repear

B there is 7 electrons

An atom of nitrogen has (B) seven electrons.

In an atom in neutral state, number of electrons are equal to the number of protons. Since nitrogen has an atomic number of 7, which indicates the number of protons in its nucleus, it also has seven electrons to balance the positive charge of the protons and maintain an overall neutral charge.

Electrons are subatomic particles carrying a negative electrical charge. It is one of the fundamental particles that make up atoms, along with the protons as well as the neutrons. Electrons are a part of the family of elementary particles known as leptons. The movement of electrons within materials is responsible for electrical current flow and the generation of electromagnetic fields.

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Answer:

It is an extrusive igneous rock

Explanation:

Based on the physical appearance, the geologist can make an accurate conclusion about the rock's formation and in which type of rocks does it belong. The fine-grains made up of small crystals give away clues about the formation of the rock. Fine grains with small structures occur when the lava reaches the surface and cools off very quickly, thus not giving the crystals enough time to grow, so they are very small. The geologist can classify this rock on base of this information as an igneous rock, as it has been formed from lava, and as an extrusive igneous rock, as the fine grains and small crystals only occur when the lava cools of quickly on the surface.

Answer:

It formed from rock that cooled quickly

Explanation:

B.

Answer:

The steps of DNA replication always begin by separating a twisted strand into two untwisted molecular strands. It happens in the specific area of a chromosome known as the “origins". The origins contain a series of codes that attract the helicase, a protein that aids in the separation of the strands. Once the helicase locates the origins, it sends out signals inside the cell for other replication initiator proteins to help out in the separation. DNA strands are being separated by breaking the hydrogen bonds between the nucleotide base pairs, such as those of adenine (A) and thymine (T), and guanine (G) and cytosine (C).  

Step 2: Replication Fork Formation

Splitting the original double helix into two strands visually presents a Y-shaped formation known as the replication fork. Each prong appears as an elongated line that requires an identical half to match in order to form a new pair of strands. One of the separated strands is called the leading strand, which is constantly utilized for DNA synthesis while the lagging strand is responsible for the complimentary strand’s synthesis.  

Step 3: Binding of Bases to Each Strand

Both leading strand and lagging strand already has base patterns from the start and it serves as the template for the corresponding strands. For each strand, the bases match with the free floating nucleotides present inside the cell following the nucleotide base pairing rules to establish the hydrogen bonding between a separated strand and a new matching strand. It is made possible by the DNA polymerase, an enzyme that functions like a sewing machine in matching and zipping both strands together.  

The replication process does not result to a brand new chain of DNA. It is always a mixture of both the original strand that is conserved as a partner all throughout the continuous steps of DNA replication process and the recently made strand. This process is recognized as the semiconservative replication.  

Step 4: The Termination of the Replication Process

The termination process occurs as soon as the DNA polymerase enzyme arrived at the edge of the strands where no more possible replication could occur. But before the process is completed, it goes through the process of repair to correct errors such as mismatching of nucleotides. After this step, the DNA replication is completed.

Explanation:

In molecular biology, DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule. This process occurs in all living organisms and is the basis for biological inheritance.

Ribonucleic acid (RNA) is a polymeric molecule implicated in various biological roles in coding, decoding, regulation, and expression of genes. RNA and DNA are nucleic acids, and, along with proteins and carbohydrates, constitute the three major macromolecules essential for all known forms of life

Answer:

plastics

Explanation:

ocean is the most valueable resources from the earth .At least even somenon ocean resources vegetables are also related to ocean. Most of fish are also related to ocean.

But as my thought plastics are the

Hello. This question is incomplete. The full question is:

"Which of the following is not an ocean resource

a- sand  b- common table salt  c- natural gas  d- silver"

Answer:

d- silver

Explanation:

Silver is not an oceanic resource, but a mineral, a metal, a chemical element that can be found on the Earth's surface. As silver is a mineral, we cannot call it an oceanic resource, but rather a mineral resource.

A mineral resource is an inorganic substance, such as silver. There are other mineral resources such as iron, aluminum, manganese, sulfur, among others.

Answer:

no

Explanation:

because there Gene's are totally diffrent

Final answer:

Phylogenetic trees show that dolphins do not share the most derived characteristics with horses. Instead, they have a common ancestry with even-toed ungulates. The similar body shapes between dolphins and fish are an example of analogous traits due to convergent evolution.

Explanation:

​In biology, phylogenetic trees are used to show the evolutionary relationships between different species. These relationships are determined through various evolutionary characteristics which can either be shared or derived. Regarding the relationship among different animals, let's address the questions raised by examining their evolutionary traits.

When considering the evolution of cetaceans, which includes dolphins, we observe that they have derived from even-toed ungulates and share a common ancestry with several other mammals including the hippopotamus, cow, sheep, camel, and pig. This common ancestry indicates that a horse, which is also an ungulate, is not the closest relative to a dolphin within this context. An armadillo would not fall on the same branch of the phylogenetic tree close to horses or cetaceans.

Comparing DNA sequences among animals, a whale would share more sequences with a horse than with a shark because whales and horses are both mammals; whereas, sharks are fish with a very different evolutionary history. Lastly, the similar body shape observed between dolphins and fish is an example of an analogous trait, since dolphins are mammals and fish are not, their similar body shapes have evolved independently due to convergent evolution within similar environments.

Answer:

I wanna say pulley

Explanation:

I say pulley

c is right

Explanation: :()

In biological terms, the sex of an individual is primarily determined by the X and Y chromosomes in mammals, with XX indicating a female and XY indicating a male. However, in some species, sex can change during one's lifetime. Gender identity can differ from biological sex, acknowledging the spectrum beyond male and female.

The determination of whether an individual is male or female can largely be based on the X and Y chromosomes in mammals. Individuals homozygous for X (XX) are female and heterozygous individuals (XY) are male. The presence of a Y chromosome instigates the development of male traits and its absence results in female characteristics. This XY system is found in some insects and plants as well. However, it is important to remember that people often use the terms 'male' and 'female' to describe both our biological sex and our gender identity. For some, gender identity might be different from their biological sex or the sex they were assigned at birth. In these explanations, 'female' and 'male' refer strictly to biological sexes.

Furthermore, some species can change sex during their lifetime, alternating between male and female; this is known as protogyny (female first) or protandry (male first). Also, some creatures, such as certain types of snails, are hermaphrodites. When two individuals mate, they both can produce eggs, exhibiting characteristics of both sexes.

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The characteristics of minerals are..

-must be a solid

-must be naturally occurring

-formed by inorganic processes

-definite crystalline structure

-definite chemical composition

the answer is option 3 or C

Answer:

D. lack of genetic diversity in the potato plants

Explanation:

The Irish Potato Famine occurred because of successive years of failed crops. The Irish became almost totally dependent on the potatoes as their primary food of source by the 18th century. This led to heavy dependence on this plant for the sheer survival of the population, which makes the population very vulnerable to famine, as the genetic diversity is too small, so a single disease can make enormous damage. That is exactly what happened, as the late blight managed to destroy the potato plants, leaving the country without its primary food source. The end result was large portion of the population dying because of starvation, lot of people were barely surviving, and lot of people migrated out of the country.

Final answer:

Ben should consider the lack of genetic diversity in Irish potato plants as the critical factor for the Irish Potato Famine, as this led to the susceptibility of the crop to potato blight, resulting in mass starvation and emigration.

Explanation:

The critical factor Ben can consider for the Irish Potato Famine is lack of genetic diversity in the potato plants. This lack of diversity made the single variety of potato grown in Ireland extremely susceptible to a disease known as potato blight, caused by the pathogen Phytophthora infestans. When the blight struck, it wiped out the entire potato crop, which was a staple food source for the Irish population at the time. The devastation led to mass starvation, with over one million deaths, and huge emigration, with nearly two million people leaving Ireland. This event highlights the significant risks associated with low crop diversity and the importance of breeding a variety of crops to maintain food security.

PO4 -3 is actually the answer

Answer:

Phosphate ion[tex]PO_4^{3-}[/tex] is the anion found in phosphoric acid

Explanation:

The formula of phosphoric acid is[tex]H_3PO_4[/tex].It is is a weak acid.

It is formed by three molecules of hydrogen atoms combine with one molecule of phosphate ion.

The molecular formula of phosphate ion is [tex]PO_4^{3-}[/tex]

[tex]3H^++PO_4^{3-}\rightarrow H_3PO_4[/tex]

Phosphate ion is the anion found in phosphoric acid

Hello. This question is incomplete. The full question is:

"Which of these bones is part of the axial skeleton

A. Ulna B.fibula C.vertebra D.phalanges "

Answer:

C.vertebra

Explanation:

The axial skeleton is made up of bones that are close to the central axis of the body. In an adult this skeleton is formed by 80 bones that includes bones that form the cranium, the spine, the ribs and the sternum.

It is in the spine that we find the vertebrae. With this we can say that among the bones shown in the question above, the one that is part of the axial skeleton is the vertebra.

In the spine we find the following vertebrae:

The Axial Skeleton consists of the bones of the head, vertebral column, the rib cage and the sternum. Hence, a bone part of this section would have to be from one these areas.

The Axial Skeleton is the part of the skeleton that consists of the bones of the head and trunk of a vertebrate. In humans, it consists of 80 bones and includes the skull, vertebral column, rib cage and the sternum. Therefore, if you're considering a bone to be a part of the axial skeleton, it would have to belong to either the head, vertebral column or the rib cage.

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Answer: Codons

Explanation:

The mRNA bases are grouped into sets of three, called codons. UAG is amber, UGA is opal (sometimes also called umber), and UAA is ochre. Stop codons are also called "termination" or "nonsense" codons.

Three bases found on mRNA, referred to as a codon, correspond to a particular amino acid, encoding the genetic information that is translated into a protein sequence.

Three bases found on mRNA are indeed referred to as a codon. The cellular process of transcription generates a strand of messenger RNA (mRNA), a copy of one or more genes within the DNA. This copy is composed of sequences, A, C, G, and U (uracil). Each triplet of bases, or codon, on the mRNA corresponds to a particular amino acid. In other words, the genetic code is a series of codons, and this code is translated into a protein sequence through the process of translation.

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C. Experimental data that support the conclusion

A good conclusion is defined when experimental data support the conclusion of any hypothesis because it does not cause any change in the hypothesis, hence option c is correct.

A conclusion is formed using the information gathered during an investigation and its repeats. The hypothesis may well be supported by the data or not.

After reading the article, the reader is supposed to understand from the conclusion why your research should be important to them. The final paragraph of a research paper, essay, or article that summarizes the whole work is the conclusion.

The conclusion paragraph should repeat your thesis, identify the important points you made in support of it throughout the paper, and provide your evaluation of the main concept.

Therefore experimental data support the hypothesis and lead to a good conclusion, hence option c is correct.

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Answer:

The two cycles of the matter are the carbon and nitrogen cycle. Both of them are biogeochemical cycles, it means that the chemicals spend a portion of the cycle in living things and non-living things. They are also common in that they both recycle nutrients that are essential to all organisms. 

They are different in the manner that they cycle. Nitrogen is huge, 78% of the air around us is nitrogen. It cannot be used by plants or animals. Once the nitrogen is used by the plant and make its way to the animal, it can be released to decomposition. 

Carbon has no requirement in processing by bacteria prior to plants and animals being able to use. Plants take carbon dioxide and make it sugar, animals eat the sugar. Some of it is released carbon dioxide that we exhale.

Answer:

The path of energy in an ecosystem is unidirectional, that is, it has a one-way path. On the other hand, matter circulates between the biotic environment and the abiotic environment, thanks to the presence of decomposers. This circulation of matter is called cycles of matter. These cycles are essential for the life and reproduction of living beings. They are natural processes that recycle chemical elements such as carbon, water, nitrogen, phosphorus, among other elements.

Below is a comparison between the carbon and nitrogen cycles.

Explanation:

Nitrogen: Nitrogen is an essential chemical element for life, it participates in protein molecules and also in the nitrogenous bases of nucleic acids. In its gaseous form (N2), it constitutes almost 80% of the atmospheric air, but it cannot be assimilated directly by the vast majority of living beings. Plants can absorb nitrogen in the form of ammonia or nitrates and animals take advantage of this element when they ingest proteins that contain it. Plants can obtain nitrates by two different methods: biological or direct fixation and nitrification.

Carbon: Organic compounds are those that have carbon in their composition. In the atmosphere, we find carbon in the form of carbon dioxide (CO2). Carbon dioxide is popularly known as carbon dioxide and it can pass from the abiotic medium to the biotic medium through the producers, through the process of photosynthesis. Photosynthesis uses six molecules of carbon dioxide to produce one molecule of glucose, so deforestation contributes to the accumulation of carbon dioxide in the atmosphere. Carbon can occupy different trophic levels along the food chains and returns to the abiotic environment through the breathing of living beings, in the form of CO2, and also through the decomposition of excreted substances and organisms that have died.

Burning fuels such as coal, firewood and petroleum products, such as gasoline, also releases carbon dioxide into the atmosphere. Some of the carbon does not return to the cycle, as it enters the composition of bones and shells, constituting the carbonates that decomposers are unable to modify. The assimilation and return of carbon to the abiotic environment are directly related to the energy flow of ecosystems. We can see from this that all cycles are related, to keep the biosphere in balance.

Answer: Sodium and potassium

Explanation: The process by which the sodium and potassium ions moves across the membrane to generate the membrane potential which helps in the signal transduction.

This process is important for a variety of reasons, the movement of ions across membranes generates membrane potential which helps in the transmitting the signals for the relaxation of the muscles which includes heart muscle and muscles of various parts pf the body.

It maintains a balance in the body and if there is any problem in the muscles or cardiac contractions sodium potassium pump is responsible for it.