Question

Oxygen and carbon cycle through Earth's spheres, connecting living, or biotic, and nonliving, or abiotic, components in an ecosystem. Oxygen is produced by plants through photosynthesis, and it is used by other organisms during the process of cellular respiration. Carbon dioxide can be released into the atmosphere during cellular respiration or through the burning of carbon-based materials, such as fossil fuels. Sunlight and temperature can influence the processes of photosynthesis and cellular respiration.



The model shows the cycling of carbon and oxygen through the atmosphere, geosphere, and biosphere.



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What role does sunlight have in the cycling of oxygen in an ecosystem?


Sunlight directly produces oxygen, which is then used by the living parts in an ecosystem.


Sunlight directly produces oxygen, which is then used by the nonliving parts of the ecosystem.


Sunlight is absorbed by plants to produce oxygen, which is then used by the living parts of the ecosystem.


Sunlight is absorbed by plants to produce oxygen, which is then used by the nonliving parts of the ecosystem.

Answer 1

Sunlight is absorbed by plants to produce oxygen, which is then used by the living parts of the ecosystem.