Question

choose the statement that correctly describes how carbon is cycled. through photosynthesis, carbon dioxide is changed into food with oxygen as a waste product. by converting it into sugars, plants relay carbon to animals and animals convert it to oxygen. plants consume carbon and release oxygen, and animals consume oxygen and release carbon. animals consume carbon and release oxygen, and plants consume oxygen and produce carbon.

Explanation:

In photosynthesis, plants take in carbon - dioxide and release oxygen. Animals consume oxygen during respiration and release carbon - dioxide. This is part of the carbon cycle. The first option correctly describes the role of photosynthesis in the carbon cycle. The second option is incorrect as animals do not convert carbon to oxygen. The third option is a general statement about gas exchange but is not as specific as the first about the carbon - cycle process in photosynthesis. The fourth option has the roles of plants and animals reversed.

Answer:

Through photosynthesis, carbon dioxide is changed into food with oxygen as a waste product.