1. False
Whale sharks and manta rays can indeed be large, and they are predators, but they do not pose threat to divers. Both of these species, even though they do not look alike at all, are part of the shark family. While they are both in the predator category, they actually eat miniature organisms and very tiny fish in general, thus not being anywhere near as aggressive or dangerous for the divers as some of their shark relatives. The manta rays for example do not even have teeth to pose a significant threat, they have a poisonous sting on their tail but that is only used for defense, not attack.
2. False
The octopuses are definitely one of the weirdest and most interesting animals on the planet. They are highly intelligent, have even been noticed using tools, have three hearts, one central and eight other independent brains in their tentacles, and also have a beak. Like all of that is not weird enough, they also have the ability to change their color, and not just the color all over, but also to mimic certain patters. The change of color is used for both camouflage for attack and for defense and avoiding predators.
3. True
The turtles spend the majority of their lives in water, but they still use the land for nesting. They will come to the sandy beaches, dig a large hole, and fill the hole with hundreds of tiny eggs, and than cover them with send. The sex of the turtles that are developing in the eggs depends directly on the temperature of the sand, so it can literary be a situation where all of them will be female because of the temperature, or all of them to be male because of the same reason.
4. True
The corals are a weird bunch. They look like plants, but they are actually animals. They also look like one compact unit, but they are actually millions, or billions miniature animals that are collaborating and build colonies. They also are interesting in their reproduction, as all of the species are able to reproduce asexually, but there are some that are able to reproduce both asexually and sexually, depending on the circumstances.
According to the theory of isostasy, which statement must be true?
A. The asthenosphere has the same density as the lithosphere.
B. The lithosphere is denser than the asthenosphere.
C. The asthenosphere is denser than the lithosphere.
D. The lithosphere has the same density as the core
Answer:
According to the theory of isostasy, the statement that correct is C.
Explanation:
Ok, let's first explain what the isostasy is: the Isostasy is the ideal theoretical balance of all large portions of Earth’s lithosphere as though they were floating on the denser underlying layer, the asthenosphere, a section of the upper mantle composed of weak, plastic rock.
The asthenosphere is a part of the upper mantle just below the lithosphere that is involved in plate tectonic movement and isostatic adjustments. And the lithosphere is the solid, outer part of the Earth. The lithosphere includes the brittle upper portion of the mantle and the crust, the outermost layers of Earth’s structure.
Taking into account these characteristics, the lithosphere is less dense than the asthenosphere. This is because less dense substances (lithosphere) will float on top of denser substances (asthenosphere). Since the lithosphere is on top of the asthenosphere it must be less dense.
Answer:
C. The asthenosphere is denser than the lithosphere.
Explanation:
The theory of isostasy states that the deeper layers of earth crust must have higher density than that of upper layers. It is required to allow the upper lighter layers to float on the underlying denser layers. Since asthenosphere is present below lithosphere, the asthenosphere is denser than the lithosphere.
What is the relationship between air and high presure and low pressure areas?
It all depends on the direction it is flowing
air will move from low pressure to high pressure
the air will stay stagnant and not move
air will move from high pressure to low pressure
the answer is D. Air will move from an area with higher pressure to an area with lower pressure :)
Answer:
Air will move from an area with higher pressure to an area with lower pressure
Explanation:
Match the part of the system with its definition
kidney - removes urine from the body by making urine
urethra - leads urine from the body
bladder - stores urine until it is ready to be released
ureter - leads urine away from the body
How do organelles work together in the functioning of the cell?
Answer:
All of the cell's organelles have to work together to keep that cell are healthy as possible.
Explanation:
Each organelle has a specific function or job for it to do for the cell to survive. The nucleus (the middle of the cell) of a eukaryotic cell moves and directs the cell to do the cells job and stores DNA.
Differences between physical and biological aspects of environment
Answer:
Physical environment is the sum of all abiotic (non-living) elements such as water, air (gases), minerals, etc. In a physical environment, total amount of matter remains same but it may changes its state. Physical environment provides shelter, food and energy to the living organisms.
Biological environment includes all forms of life that interact closely with the abiotic elements and perform biogeochemical activities for their own growth and survival. In short, biotic entities directly depend on the elements of physical environment.
Which processes produce carbon dioxide as a waste product?
Answer:
Ethyl alcohol fermentation and the krebs cycle.
Explanation:
During the light dependent reaction of photosynthesis light energy is converted into which form of energy
Answer: Chemical energy
Explanation: During light dependent reactions of photosynthesis, light is absorbed by chlorophyll and other light absorbing pigments. The light energy absorbed is conserved as ATP and NADPH. In light dependent reactions, the light energy is used to split water molecules into hydrogen ions and oxygen molecules and consequent production of ATP and NADPH. This reaction is called photolysis of water. The oxygen molecules is evolved while the hydrogen ions are transferred to NADP+ to produce NADPH. In light dependent reactions, ATP and NADPH are produced.
ATP and NADPH are forms of chemical energy which are usable in the cells. Therefore, light energy is converted into chemical energy in light dependent reactions of photosynthesis.
A unique characteristics of birds is that they have?
_____Succession involves a pioneer species.
A. Primary
B. Tertiary
C. Secondary
D. Quaternary
Answer:
A. Primary
Explanation:
Pioneer species are the first to arrive after a disturbance, so they are part of the first stage of succession = primary.
Answer:
Primary.
Explanation:
Succession may be defined as the change of the structure of the ecosystem and species with time. Two main types of succession are the prmay succession and secondary succession.
Primary succession occurs on the baren land. The ioneering species is the first species that inhabit in the baren land. Hence, pioneer species is involved in the primary succession.
Thus, the correct answer is option (A).
Please help plzzzzzz
Which is most likely an example of a vestigial structure?
Answer:Tailbone of a human
Explanation:
the human appendix is an example of vestigial features.
Why is the human appendix considered a vestigial structure?The human appendix can be referred to as a vestigial organ because it has been proven that removing it after childhood causes no damage.
but, in humans, the appendix has developed to the point where it is strategically located at the intersection of the midgut and hindgut.
Appendixes were employed for digestion by prehistoric humans, who were mostly herbivores.
but, as humans progressed, they began to eat extra without difficulty digestible foods, and the appendix finally lost its ability to function.
Examples of Vestigial Organs
Sinuses. Human cheekbones hold the maxillary sinuses.Appendix. It is one of the most commonly known vestigial organs.Coccyx.Wisdom Tooth.External Ear.Nictitating Membrane.Tonsils.Learn more about vestigial structure here
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Kate is arguing with her friend that sardines have higher net production efficiency than blue whales. Why do you think that Kate is making this statement?
A.
because sardines are at the top of the food chain, being apex predators, as they feed on blue whales
B.
because sardines have better ability to assimilate energy and convert it to biomass than the blue whales
C.
because sardines are warm blooded and blue whales are cold blooded
D.
because sardines are producers and blue whales are herbivores
Answer:
C
Explanation:
The answer is B but theyre making me write 20 characters so im just going to write a bunch of random stuff now
Why are scientists researching how to carry out fusion reactions on Earth?
Answer:
Fusion energy which is the exact opposite of fission energy is a more reliable energy that is very sought after by scientist.
Explanation:
Fusion energy does not produce runaway chain reactions so there is no need to worry about meltdowns it also does not produce as much radioactive waist. it's very hard energy to get two, the temperature would need to be about 100 million degrees Celsius six times hotter then the core of the sun.
Fusion has the potential to provide the kind of baseload energy needed to provide electricity to our cities and our industries.
Why do scientists study fusion?
The fusion process has been studied in order to understand nuclear matter and forces, to learn more about the nuclear physics of stellar objects, and to develop thermonuclear weapons.
What is the purpose of fusion energy?Fusion power is a proposed form of power generation that would generate electricity by using heat from nuclear fusion reactions.
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Which option uses the monitoring method to check the growth of invasive species?
A.
introduction of a predator species
B.
digging of the species
C.
tilling the land
D.
spraying pesticide
E.
cleaning of ship ballast
PLEASE HELP
Answer:
The answer is A.
Answer:
The correct answer is option A, that is, introduction of a predator species.
Explanation:
Any kind of living species like an amphibian, a plant, insect, bacteria, fungus or fish that are not native to an ecosystem and results in destruction is known as an invasive species. They can impart harm to the health of a human being, surrounding, or even to the economy of the nation. An essential factor that converts the species into an invasive one is the non-presence of predators in the novel surrounding. Therefore, the presentation of a predator species would possibly assist in imparting a check in the development of the invasive species.
Which statement describes the major role of lipids within the cell
Answer:
storage of energy and formation of cell membrane
Which of these is an example of an environment changing slowly?
A. Hurricane
B. Forest Succession
C. Volcanic Eruption
D. Flooding
Which of these is an example of an environment changing slowly?
A. Hurricane
B. Forest Succession
C. Volcanic eruption
D. Flooding
ANSWER B.
Forest succession is an example of an environment changing slowly, as part of the process of ecological succession. This gradual change allows for a diverse range of species to establish over time, unlike rapid changes caused by events like hurricanes or volcanic eruptions.
Explanation:An example of an environment changing slowly would be B. Forest Succession. This is a natural process called ecological succession, which involves the gradual changes in the types of species that occupy an area over time. Unlike a hurricane, volcanic eruption, or flooding, which can cause sudden and significant changes to an environment, forest succession is a slower process where the ecosystem evolves and new communities of plants and animals establish over a period of years, decades, or even centuries.
Secondary succession, for example, occurs in areas where a disturbance has happened, such as a forest cleared for farming that is later abandoned or an area recovered after a fire. This type of succession is faster than primary succession because the soil is already present. The ecosystem's recovery begins with pioneer species, and over time, a mature and stable community develops, characterized by a diverse range of species adapted to the slower changing conditions.
What would happen to a coral reef if sea levels suddenly rose?
when the see levels rises the great barrier reef will have less and less fishes
According to the graph below, at which point is the plant performing the most
photosynthesis?
A. Point C
B. Point A
C. Point B
D. Point D
Answer:
Point C
Explanation:
Oxygen is a by-product of photosynthesis, so when the oxygen production is at its highest, photosynthesis is also at its highest.
Answer:
A. Point C
Explanation:
The plant which is evolving most oxygen is performing the most photosynthesis because during photosynthesis inorganic carbon dioxide and water react in the presence of sunlight to synthesis organic molecule known as glucose and oxygen is evolved.
The reaction for photosynthesis is depicted as under:
6CO₂ + 6H₂O + sunlight → C₆H₁₂O₆ + 6O₂
(carbon (water) (glucose ) (oxygen)
dioxide)
So, more evolution of O₂ (oxygen) implies more photosynthesis.
According to the graph, which biome would be expected when rainfall ranges between 150 cm/year and 200 cm/year?
a. Tropical rain forest
b. Grassland
c. Tropical seasonal forest
d. Savanna
The answer is C. Tropical seasonal forest.
what two factors cause differences i ocean water density
1) salt concentration
2) water pressure
Answer:
Temperature and salt concentration in ocean water cause difference in density.
Explanation:
Density is the measurement of mass per unit of a substance. Pure water without any impurities has a density of 0.998 g/ml at room temperature. The two important factors that cause changes in Ocean water density are
1. Temperature
2. Salt concentration
If we decrease the Ocean temperature its density will increase respectively. while in case of salt concentration density of ocean water will increase with higher salinity.
13. Which of the following leads to increased genetic diversity?
A) sexual reproduction
B) asexual reproduction
C) conjugation
D) all of the above
E) both (a) and (c)
E) both (a) and (c). Is the answer
Increased genetic diversity is achieved through both sexual reproduction and conjugation. The correct answer is E) both (a) and (c).
Sexual reproduction involves the combination of genetic material from two individuals, leading to offspring that are genetically distinct from their parents and each other. This process introduces genetic variations through mechanisms such as crossing over during meiosis and the random assortment of chromosomes. These variations contribute to the genetic diversity within a population, which can be advantageous in adapting to changing environments.
Conjugation is a process found in some bacteria where there is a direct transfer of DNA between two cells that are temporarily joined. While not sexual reproduction in the traditional sense, it similarly results in increased genetic variation in the population.
Jesus told this disciple he would become a "fisher of men".
John
James
Andrew
Peter
Answer:
Peter and Andrew
Explanation:
According to Matthew 4:18-19
(18) And Jesus, walking by the sea of Galilee, saw two brothers, Simon called Peter, and Andrew his brother, casting a net into the sea: for they were fishers. (19) And he said to them, Follow me, and I will make you fishers of men.
Hope this helps! :)
Which of the following is not a place where hydrogen can be found on Earth?
A. Mine
B. Natural gas well
C. Water
D. Atmosphere
Answer:
c. water
Explanation:
the chemical compound is H20, which stands for hydrogen and 2 oxygen
Answer:
D. Atmosphere
Got the answer from Penn Foster on the last earth science test. The answer is in Lesson 6: 6.2
Which of these phrases is correlated with sieverts? Check all that apply. one disintegration per second one joule of energy per kilogram of matter number of disintegrations of radioactive atoms over a period of time radiation dose absorbed by any material radiation dose absorbed by biological tissue measurement of emitted radiation measurement of radiation dose measurement of biological risk
Answer:
The correct answers are
-one joule of energy per kilogram of matter
-radiation dose absorbed by biological tissue
-measurement of biological risk
Explanation:
Answer:
The correct answers are "one joule of energy per kilogram of matter", "radiation dose absorbed by biological tissue" and "measurement of biological risk".
Explanation:
A sievert is a standardized unit used to study the biological effect that ionizing radiation have on an organism. It is defined as one joule of energy per kilogram of matter, where the matter in question belongs to a biological tissue. The sieverts are used to estimate the health effects that radiation exposure have in living beings. Therefore, they are a measurement of biological risk. It is estimated that a single exposure of about five sieverts would kill half of the persons exposed within a month.
How do I describe the shape of a histogram?
Answer:
A histogram may have a variety of shapes. However, the 3 most common of these shapes of histograms are skewed, symmetric, and uniform. The dashed lines cut the graph into 2 equal pieces, so both graphs are symmetric with respect to the dashed line.
What is the best description of chromosomes by the end of anaphase 2 of meiosis
Answer: The answer is, The chromosomes of two diploid cells split apart at the centromere Hope this helps:)
what is the difference between a new moon and a lunar eclipse
Answer:
Difference Between Lunar Eclipse And New Moon. Lunar Eclipse occurs when the earth comes between the sun and the moon in such a way that it blocks the sun's rays completely from reaching the moon. New moon is the phase of the moon during its monthly orbit when the moon lies between the sun and the earth
Explanation: Your welcome!
Answer:
Difference Between Lunar Eclipse And New Moon. Lunar Eclipse occurs when the earth comes between the sun and the moon in such a way that it blocks the sun's rays completely from reaching the moon. New moon is the phase of the moon during its monthly orbit when the moon lies between the sun and the earth
Explanation:
3. What part of the cell does 4 represent?
A. Cytoplasm
B. Smooth endoplasmic reticulum
C. Rough endoplasmic reticulum
D. Mitochondrion
It's represent Mitochondrion
The cell does 4 represent is D. Mitochondrion. Thus, option "D" is correct.
What are mitochondria?The crista is an integral part of the mitochondria. As you already know, mitochondrion is a cytoplasmic organelle. it has two members that delimit it, the outer membrane is completely smooth, however the inner membrane is composed of numerous folds, that are called crista, and that spread through the interior of the mitochondria.
These cristae have as main function to increase the surface of the inner membrane.
Thus, option "D" is correct.
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The bones in the front fins of whales and the bones in the human arm evolved from a common ancestor but carry out different functions. This is an example of
A. homologous structures.
B. vestigial structures.
C. embryonic structures.
D. analogous structures.
Answer:
A. homologous structures.
Explanation:
Divergent evolution leads to the development of the evolution of homologous structures in closely related species. These structures have a common basic plan but are adapted to perform different functions according to the habit and habitat of the organism.
Fins of whales and human arms have common basic origin but are adapted to serve in swimming and holding things since whales are aquatic mammals but the human is not. Hence, they are homologous organs.
which is the largest level of classification of these options?
A. family
B. order
C. class
D. phylum
-apex
Answer: phylum
Explanation:
kingdom, phylum, class, order, domain, family, genus and species