AP BIOLOGY

Detailed explanation-1: -Animals are primary consumers of carbon dioxide. Humans are producers of carbon dioxide. Carbon dioxide is easily dissolved in water. All of the carbon in existence is continually recycled in the carbon cycle.

Detailed explanation-2: -The carbon cycle describes the process in which carbon atoms continually travel from the atmosphere to the Earth and then back into the atmosphere. Since our planet and its atmosphere form a closed environment, the amount of carbon in this system does not change.

Detailed explanation-3: -The process through which carbon is recycled through living organisms, the atmosphere, and other parts of the biosphere is called the cycle. Cellular respiration and photosynthesis are important parts of the carbon cycle. The carbon cycle is the pathways through which carbon is recycled in the biosphere.

Detailed explanation-4: -The carbon cycle describes the continuous flow of carbon between organic and inorganic carbon reservoirs, or areas of Earth where large amounts of carbon are stored. Most of Earth’s carbon is found in inorganic reservoirs such as rocks, water, and sediments.

Detailed explanation-5: -The correct answer is b. Photosynthesis is the process through which plants “fix” carbon from gaseous carbon dioxide to produce sugar.