An ecosystem is a community of living organisms interacting with their physical environment. Food chains show how energy flows through ecosystems as o
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Why are there fewer apex predators than herbivores?
Because only about 10 percent of energy from each level passes to the next level. Much energy is used for metabolism and lost as heat. This energy loss means apex predators must cover large areas to find enough food to survive.
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What happens if all decomposers are removed from an ecosystem?
Dead organisms would accumulate and not be broken down. Nutrients would not be returned to soil. Plants could not obtain nutrients and would die. The entire ecosystem would collapse. Decomposers are essential for ecosystem function.
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Can an ecosystem exist without producers?
No, ecosystems require producers to capture energy from the sun. However, some deep-ocean ecosystems use chemosynthetic bacteria that use chemical energy from thermal vents instead of sunlight. These are rare exceptions.
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