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9 Cards in this Set
- Front
- Back
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Food chains
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show the feeding relationships between living things.
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How does carbon move?
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Carbon moves from the atmosphere into living species and back into the atmosphere in a cycle that is crucial to life on Earth.
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decay process
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an essential life process that digests food or waste matter and recycles materials. Materials from living things decay because they are digested (broken down) by microorganisms. These microorganisms cause decay by releasing enzymes that break down compounds to be absorbed by their cells.
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enzymes
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break down compounds to be absorbed by their cells.
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main groups of decomposers
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bacteria and funghi
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under what conditions does the rate of decay increase?
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moist
warm full of air (aerobic) |
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How is carbon removed from the atmosphere?
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Green plants and algae remove carbon dioxide from the atmosphere by photosynthesis. The carbon becomes part of complex molecules such as proteins, fats and carbohydrates in the plants and algae.
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How is carbon returned to the atmosphere?
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Organisms return carbon dioxide to the atmosphere by respiration. It is not just animals that respire. Plants, algae and microorganisms do too.
Carbon dioxide is also released into the atmosphere when fossil fuels such as coal and oil, and wood, are burned. |
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How is carbon transferred from one animal to another?
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When an animal eats a plant, carbon from the plant becomes part of the fats and proteins in the animal. Microorganisms and some animals feed on waste material from animals, and the remains of dead animals and plants. The carbon then becomes part of these microorganisms and detritus feeders.
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