Question

1. explain how removing all plants from earth would disrupt the cycle between photosynthesis and cellular respiration. which of the following best describes the chain reaction that would occur? a) oxygen levels would rise because animals would produce more carbon dioxide. b) carbon dioxide levels would decrease, and animals would have more oxygen. c) oxygen levels would decrease, carbon dioxide would build up, and most living organisms would struggle to survive. d) both photosynthesis and cellular respiration would continue normally without plants.

Explanation:

Plants perform photosynthesis, which takes in carbon - dioxide and releases oxygen. Without plants, there would be no photosynthesis to replenish oxygen. Cellular respiration by animals and other organisms consumes oxygen and releases carbon - dioxide. So, oxygen levels would drop and carbon - dioxide would accumulate, making it hard for most organisms to survive.

Answer:

C. Oxygen levels would decrease, carbon dioxide would build up, and most living organisms would struggle to survive.