Answer:
I thinks is pollution
Explanation:
its the only one that makes sense
“Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.”
You didn't put any answer choices, but air and water are generally the greatest.
Answer:
Gravity?
Explanation:
Or it could be a non contact force.
