PLZ HELP ME The Cycling of Matter and Energy
The different levels of organization in living systems have varying energy needs, however, they all use energy and matter found within the environment and the biotic factors in an ecosystem. The processes of photosynthesis and cellular respiration keep matter cycling and energy flowing throughout the ecosystem.

How does matter cycle in the ecosystem?
Beginning with the inputs of photosynthesis, the environment is a source of water and carbon dioxide that plants use to transform into glucose and oxygen. The oxygen is then released into the environment for other organisms to breathe or use to help power cellular respiration. Additionally, the glucose produced by plants is then consumed by heterotrophs and can be broken down into ATP, water, and carbon dioxide. Water and carbon dioxide are eliminated from the body and then released back into the environment for plants to use for photosynthesis. The cycle continues on and on, transforming matter into various molecules to sustain life. This is depicted in figure 8.

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