AP BIOLOGY

Detailed explanation-1: -The organisms that release carbon dioxide as waste are known as consumers and decomposers (option 2). Animals and humans that eat plants as a significant source of nutrients are referred to be consumers.

Detailed explanation-2: -Carbon dioxide is released back into the atmosphere during respiration of consumers, which breaks down glucose and other complex organic compounds and converts the carbon back to carbon dioxide for reuse by producers.

Detailed explanation-3: -Decomposers also release organic compounds and carbon dioxide when they break down dead organisms and waste products.

Detailed explanation-4: -Natural sources of carbon dioxide include most animals, which exhale carbon dioxide as a waste product. Human activities that lead to carbon dioxide emissions come primarily from energy production, including burning coal, oil, or natural gas.

Detailed explanation-5: -In the carbon cycle, decomposers break down dead material from plants and other organisms and release carbon dioxide into the atmosphere, where it’s available to plants for photosynthesis.