B. Photosynthesis
C. Decaying organisms
D. The gases in the atmosphere
Answer: A. Positive ions
An ocean is a reservoir of carbon. All of the following bring carbon into the ocean except positive ion:
Photosynthesis: Photosynthesis is conducted by aquatic plants in the ocean to prepare their food which is a carbon product.
Decaying organisms: The aquatic plants and animals are buried beneath the ocean bed and they are decayed and decomposed by the activity of microbial organisms. The organic matter produced after this process is rich source of carbon.
The gases in the atmosphere: The gases in the atmosphere consist of carbon dioxide and carbon monoxide released in the atmosphere by burning of fossil fuels, greenhouse gas emission and by other process. These gases are dissolved into ocean water making it available for photosynthesis conducted by aquatic plants. Hence, carbon from the atmosphere enters in ocean through these atmospheric gases.
burn patients?
Answer:
Autografts are skin from the own patient, so the skin will not be recognized as a foreign substance, and there is no chance that the body will reject the cells.
Explanation:
3) What environmental pressures exist now that you think may be shaping the human species?
4) What environmental pressures do you think may affect humans as Earth becomes more populated with humans in the future? Explain how these pressures may affect human traits.
1) What evidence is there that the human species has been successful so far? Explain.
Successful evolutionarily means "surviving and spreading geographically". Since we are far from extinction and we've spread all over the world, we are successful as a species.
2) What environmental pressures in the past do you think were most important in shaping the human species as it exists today?Answer: I believe that the environmental pressures that exist now and that may be shaping the human species are the use of land, the extraction of resources, greenhouse emissions and water use. This are being used by use more and more as we start overpopulating the earth.
Answer:
Humanity is far from extinction we've spread to every corner of the earth. We have also learned to reproduce and make things to help us survive longer. We have also found ways to try and extinct ourselves but, that might be far from happening.
2: The environments, climate, and predators helped shape humans, they learned how to make weapons and create a shelter to survive harsh conditions in the wild.
3: Some of the environmental pressures we face now are man-made for example, pollution, a lack of land, and overpopulation. Some however are natural, like our limited supply of minerals.
4: I think most of the environmental pressure will come from pollution and a lack of space. With so many people around, there's going to be a lot of vehicle use, and things such as littering. We're going to have to change and start cleaning up after ourselves and limit the use of gas.
DNA
B.
proteins
C.
gametes
D.
organelles
Answer:
All cells have an outer plasma membrane that regulates not only what enters the cell, but also how much of any given substance comes in. Unlike prokaryotes, eukaryotic cells also possess internal membranes that encase their organelles and control the exchange of essential cell components.
Explanation:
The cell membrane, therefore, has two functions: first, to be a barrier keeping the constituents of the cell in and unwanted substances out and, second, to be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products.
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