Answer:
unicellular life first
Explanation:
it arose billions of years ago while multicellular life forms around at least 600 million years ago
A. Elevated land area that separates one watershed from another
The answer is water, oxygen, and chemical energy are required, and ATP is changed to ADP.
Photosynthesis occurs in the leaves of green plants. During photosynthesis, carbon dioxide and water are converted into glucose and oxygen using the energy of sunlight. Sunlight energy is converted into chemical energy stored in carbohydrates. For this process, ATP is used and, thus, changed to ADP.