it has been deduced that larval mussels was released to the Great Lakes during the ballast exchange of a cargo ship from the Black Sea. so it is an example of un-intentional release.
Final answer:
The introduction of zebra mussels in the Great Lakes is an example of an invasive species release via ballast water from ships, which has both economically impacted human infrastructure and dramatically changed the local ecosystem.
Explanation:
The introduction of zebra mussels in the Great Lakes is an example of an invasive species release. This occurred when ships released ballast water into the lakes from their tanks, which were filled in European ports. The water used for ballast, which helps stabilize the ships during transport, contained living organisms including zebra mussels. Once introduced to the Great Lakes, zebra mussels have cost millions in cleanup expenses to maintain water intakes and other structures and have significantly altered the ecology of the ecosystem. They are filter feeders that have improved water clarity, but they also threaten native mollusk populations and have benefited certain fish species like the smallmouth bass.
What is the best definition of directional selection
Directional selection is a mode of natural selection an extreme phenotype is favored over other phenotypes this causes the allele to shift over time in the direction of the favored phenotype
Directional selection is a mode of natural selection in which an extreme phenotype is favored over other phenotypes, causing the allele frequency to shift over time in the direction of the favored phenotype.
How do we explain?Phenotype: The observable physical characteristics of an organism.
Genotype: The genetic makeup of an organism.
Allele: A variant of a gene.
Allele frequency: The proportion of a population that has a particular allele.
In directional selection, there is a selective pressure for one extreme phenotype over the other phenotypes. This could be due to a change in the environment, such as a change in climate, or it could be due to a new mutation that gives the organism an advantage.
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Ammonia (NH3)can be products by bacteria in the soil by two processes:
What. And. What
Answer: Ammonification and nitrogen fixation.
Explanation:
Ammonification is the process where by organic nitrogen is converted ammonia in the soil by bacteria. These occur when bacteria breakdown the remains of dead plants and animals to release organic nitrogen and it is converted to ammonia.
Nitrogen fixation it is the process where atmospheric nitrogen is converted to ammonia or nitrate in the soil, in a way it is absorbed by plants. It is fixed by bacteria in root nodules of leguminous plants or by lightening.
What can you infer about the growth of the seed type pictured in the graphs below?
The right option is (D) Light has no effect on growth
Explanation:The graph shows the relation between growth and time period of the seed in the presence of sunlight. As we can see that there is no significant change on the growth in the presence of sunlight. So we can say that light has no effect on the growth of this seed
A large hurricane moves through a small island in the Caribbean. What are the consequences to this island’s plant and animal diversity?
The island will lose all abiotic factors needed by plant and animal populations.
The island’s ecosystem will recover due to primary succession.
The island will lose all of the plant and animal populations of the island.
The island will suffer a loss of native plant and animal species.
Answer:
The most appropriate option would be: The island will suffer a loss of native plant and animal species
Explanation:
A hurricane is a calamity that manifests itself in the form of great rain fall, strong winds and thunderstorm.
Hurricanes just like all other natural calamities cause a lot of destruction to the organisms living in an area, their habitats and become a source of introduction of certain invasive species.
If a Hurricance hits a small island in the Caribbean, there are a lot of chances that Island will lose a large amount of animals and plant species. The fact is that when a hurricane hits and goes, many not all specie re-emerge eco-system establishes due to process of succession. However, there are some native plant and animal specie that are native to a specific place like that Island, so there are more chances that after that large hurricane island will suffer a loss of native plant and animal species.
The climate of the Island will not be in a position to sustain the survival of all living organisms, therefore, some may starve and perish for always although some may recover too. Therefore, Option D seems best.
Hope it helps!
Photographs are rarely taken at the scene where bones are found. True False
The answer is False
True or false,
photographs are rarely taken at the scene where bones are found
the answer is False
Which cell specimen is a prokaryote
They are bacteria/single-celled organisms.
Answer:
Np
Explanation:
They have a plasma membrane and cytoplasm
Which organelle converts energy to a usable form
The Eurokaya cells are the organelles to convert energy to a usable form
The mitochondrion converts the chemical energy stored in food into compounds that are more convenient for the cell to use. In both plant cells and animal cells.
The _______ _______ is a cavity in the crust that feeds material to a volcano.
Answer: - Magma chamber.
Explanation:-
1. A magma chamber is a cavity which acts a reservoir of magma and it feeds a volcano.
2.A magma is basically a mixture of molten and semi molten rocks.
3. The magma is less dense than the layers of rocks and as a result of this it tends to move upwards towards the surface of the earth but when it encounters a layer of rocks in this upward journey that hinders its movement then it gets collected in a large pool which is known as the magma chamber.
4. These magma chambers are under a great pressure which results in the breaking of the rock which surrounds the magma chamber with time. Once, these rocks break the magma can then travel upwards and this results in volcanic eruption.
Thus, these magma chambers are the cavities containing the magma that feeds the volcano.
How is the speed of light affected as light passes at an angle from air to water
Identify the advantages that GMOs offer over crop varieties produced through traditional methods of breeding.
Select all that apply.
1.There are fewer government regulations and safety tests required.
2.It is easier to move genes between species.
3.There is less carry-over of undesirable traits.
4.GMOs are produced through a comparatively faster process.
An object is propelled along a straight-line path by an external force. If the net force is doubled, its acceleration would _____________.
Get faster but it will still go strait
Im so sad having to finish The Future Diary anime it was so good and now im crying and im just keep listening to the saddest song in the ost "Here with you" just seeing Yuno and Yuki there hits me hard. :(
HELP! Help me plz!
Look at pic its just one question and I'm too dumb to answer!
what was the strand form #5
A frog has a genetic mutation in its skin cells that causes part of its skin to turn orange. The frog will not pass this genetic mutation onto its offspring because A. mutated skin cells cannot divide and produce daughter skin cells. B. the offspring will inherit skin cells from the other parent. C. parents do not contribute genetic material to their offspring. D. skin cells do not contribute genetic material to sex cells.
The frog will not pass this genetic mutation onto its offspring because, D. skin cells do not contribute genetic material to sex cells.
How is mitochondrial DNA (mtDNA) typing used in forensic science?
Answer:
Mitochondrial DNA typing is a method used by forensic scientists which match the DNA of unknown sample to the sample collected from the crime scene.
This typing method posses several advantages over other nuclear DNA typing methods in forensic science as:
A large copy number of DNA (2-10 times) per mitochondria provide enough DNA sample. Depending on the functions, a cell can have many mitochondria (1-100) which can provide enough sample for typing. No recombination takes place in mitochondrial DNA so DNA sample remains unchanged over many generations. So, the sample can be matched easily with the relatives of the unknown sample. Mitochondria show only maternal inheritance that they take DNA from mitochondria of the mother. DNA is amplified using Polymerase chain reaction which undergoes direct sequencing.Thus, mitochondrial DNA typing has several advantages in forensic science.
Mitochondrial DNA (mtDNA) typing is a valuable tool used in forensic science for identifying individuals and establishing maternal relationships.
what is nuclear DNA?Unlike nuclear DNA, which is inherited from both parents and is unique to each individual (except for identical twins), mtDNA is inherited solely from the mother and is passed down unchanged from generation to generation. This unique inheritance pattern makes mtDNA analysis particularly useful in certain forensic scenarios.
In cases where human remains are found and conventional methods of identification, such as fingerprinting or dental records, are not feasible, mtDNA analysis can be used to identify the deceased.
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In terms of probability, what does each box in a Punnett square represent?
1)all possible outcomes
2)one actual outcome
3)all actual outcomes
4)one possible outcome
what are the chances that a cross between a black chicken and white chicken will result in blue offspring?
a) 0%
b) 25%
c) 50%
d) 100%
the chances that a cross between a black chicken and white chicken will result in blue offspring is 100%, because Back and white are both incomplete dominant traits, 100% of the offspring will be heterozygous blue.
What is trait ?Traits are the attributes of an organism which are influenced by the environment and expressed by genes, the Physical features of an organism, such as hair color, leaf form, size, behavioral characteristics,
They have specific traits which allow them to be successful in the ecosystem, these are physical characteristics which include fin length, body shape, color patterns, eyesight, and muscle definition.
Species with substantial variation in traits For example, white-tailed deer in Pennsylvania have seed coat color with limited variation, all the organism have characteristics are genetic traits or behavioral traits.
Genetic Traits can be defined as the genes that one gets from both parents influence, the Individual and independent traits are defined by genes, which are encoded by unique portions of our DNA.
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When crossing a black chicken with a white chicken, 50% of the offspring are expected to be blue due to incomplete dominance. This is known as Andalusian Blue pattern in genetics.
When a black chicken is crossed with a white chicken, the resulting offspring may exhibit an intermediate phenotype called blue or Andalusian Blue. This occurs due to incomplete dominance, where neither black nor white alleles completely dominate. In this case, the expected outcome is:
50% of the offspring will be blue.25% will be black.25% will be white.Therefore, the correct answer to the question about the chances of getting blue offspring is c) 50%.
This exemplifies how genetics in chickens can lead to mixed characteristics due to blending inheritance.
The Venn diagram compares aerobic respiration and anaerobic respiration. Which statement should be categorized only in the aerobic section of the venn diagram?
A) occurs in the cytoplasm
B) produces water
C) we cryers no oxygen
D) is performed by yeast
Answer:
The correct answer would be B) produces water.
Aerobic respiration is a type of respiration in which oxygen is used as the final acceptor of the electrons in an electron transport chain.
It usually takes place in mitochondria of a cell except for glycolysis part which takes place in the cytoplasm.
In this respiration, carbon in glucose is oxidized to produce carbon dioxide whereas oxygen is reduced to form water.
H₂ + 1/2 O₂ →H₂O
In contrast, anaerobic respiration usually occurs in the cytoplasm and results in the formation of lactic acid or ethanol and ATP.
Answer:
Produces water should be in the only aerobic section of the diagram. Aerobic respiration end products are carbon dioxide and water. Anaerobic respiration end products are lactic acid in animals and carbon dioxide and ethanol in yeast and plants. (: AKA the answer is B
Explanation:
Which describes the reproduction of plants?
What does neurons do?
Answer:
is an electrically excitable cell that takes up, processes and transmits information through electrical and chemical signals.
Explanation:
HELP IM STUCK!!
the pedigree below shows the inheritance of a non sex-linked trait. shaded individuals show the dominant trait. what is the probable genotype of each individual #4 and individual #6
The answer is C. The genotype of individual #4 is "Aa" and individual #6 is "aa"
The fish pond are dying because of algal bloom. Algal bloom is caused by the presence of excess phosphorus or sulfur in the pond. An investigation into the matter indicates hat chemical fertilizers made in a factory nearby are responsible for the presence of these chemicals in the water. Under what conditions might this data be considered biased?
Describe how the red crab spider is adapted for its unique method of hunting.
They can disguise themselves throughout many nations. More commonly in Australia, Europe, and the North and South America! Hopes this helps!
In a simple synapse, neurotransmitter chemicals are received by___
Mostly by Acetylcholine receptors if it is a simple neuron.
If Acetylcholine isn´t your Neurotransmitter just put the name of it before the word "receptor"
Neurotransmitter chemicals released by the presynaptic cell in a simple synapse are received by the receptors on the postsynaptic cell. Once bound, they trigger an electrical impulse in the postsynaptic cell. After transmission, the neurotransmitter is either degraded or reabsorbed for future use.
Explanation:In a simple synapse, neurotransmitter chemicals are received by the receptors on the surface of the postsynaptic cell. This is a biological process typically observed in a chemical synapse, where the neurotransmitter released from the presynaptic cell diffuses across a very minor distance called the synaptic cleft. After traversing this gap, the neurotransmitter attaches to a receptor protein, causing a change in the electrochemical potential in the postsynaptic membrane and thereby launching the next electrical impulse.
In this process, the neurotransmitter fits into its receptor akin to a lock-and-key mechanism. This binding is a very specific biochemical event, and each neurotransmitter only binds to its relevant receptor. Following the signal transmission, the neurotransmitter is rapidly degraded or reabsorbed by the presynaptic cell. This allows for the quick recovery of the recipient nerve cell and readiness to respond to the subsequent synaptic signal.
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what is the ultimate original source of energy for all living things? A. Glucose B. The Sun C. ATP D. Carbon Dioxide
ATP is the correct answer
What occurs during mitosis? Choose the correct answer.
DNA and chromosome duplication
growth and metabolism of the cell
cell division to create two daughter cells
cell division to create two daughter cells
Which of these choices is product of mitosis?
a.egg
b.sperm
c.sex cell
d.skin call
it should be the egg and the sperm.
The skin cells go through mitosis to replace dead ones. The correct answer is d. skin cells.
What is cell division?Mitosis and meiosis are the two distinct processes of cell division. When people talk about "cell division," they typically mean mitosis, which is the process of creating new cells for the body. The cell division process known as meiosis is what produces egg and sperm cells. A vital process for life is mitosis.
Cell division always involves a complex set of stages that are carefully choreographed and highly controlled. While mitosis and meiosis refer to two distinct processes of nuclear division, cytokinesis describes the division of a cell's cytoplasm.
The original nucleus divides into two identical nuclei during mitosis. Contrarily, meiosis produces four nuclei, each of which has half as many chromosomes as the parent cell. Only the gametes, or cells that develop into sex, the egg, and the sperm, go through meiosis in animals.
Therefore the correct answer is d). skin cells.
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The image of the butterfly above best represents.. Radial symmetry symmetry niche asymmetry
Where is the image...?
Why are fossils important?
They teach us what happened in Earth before we arrived. For example, if we had never found any dinosaur fossils, we would have no idea what happened. Fossils show us ancient life and what it was like back then.
Please give me brainliest ^.^
Fossils help scientists learn about and discover ancient lifeforms that have died and fosilised. They also may help us date other fossils and rocks that are hidden deep in the earth. finding similar fossils of animals on different continents helped support the continetal drift theory, which became the theory of plate tectonics!
In a plant called jimsonweed, flowers can be white or purple. A jimsonweed plant with white flowers is crossed with a jimsonweed plant with purple flowers. All of the offspring have purple flowers.Based on the results of the cross, which of the following statements most likely describes the alleles for flower color in jimsonweed?
Answer:
Although statements are not given in the question, we could make the most possible deduction as follows:
The allele for purple flowers is dominant whereas allele for white flowers is recessive.
Explanation:
According to the question,
Purple flower plant was crossed with white flower plant.All offsprings have purple flowers.Here we have one possibility that both parents were homozygous but in their own traits. Purple flower plants were "PP" and white flower plants were "pp" So, the first progeny (direct offsprings) would have "Pp". So, as per considerations, purple is dominant allele which will mask the recessive allele thus defining the color of all offsprings as purple. However, further cross of their generation will definitely end up into purple and white flowers (3:1) but this condition is not mentioned in the statement.
The autonomic nervous system controls all __________ responses of the body.
A. unconscious
B. voluntary
C. sequenced
D. repeated
A. unconscious
It's A because it controls the involuntary actions like our heart beat or breathing. The actions we aren't consistently remembering to do.