Question

Breathing is related to the carbon cycle because (1 point)
• organisms exhale carbon dioxide.
O it converts glucose and oxygen to
water and carbon dioxide.
• it produces energy.
only animals release carbon dioxide as a waste product.

Answer 1

"organisms exhale carbon dioxide."

Explanation: Breathing returns carbon to the atmosphere as CO2 (organisms inhale O2 and, via cellular respiration, convert glucose + O2 into CO2 + H2O and energy). The statement "only animals..." is false (plants and microbes also respire), and breathing itself doesn't produce energy—cellular respiration does.