4 billion years ago the temperature was much higher due to repeated volcanoes and hot gases present in the atmosphere. There weren't any live forms on earth. ... The atmosphere had a different concentration of gases on the earth. There were no life sustaining gases.
An individuals head with the similarity of a frog mind or has no throat.
Answer:
Decrease in carbon dioxide because they take in carbon dioxide for photosyenthesis process
Explanation:
Feces are deposited on the ground, and the bacteria in the soil breaks it down, and uses the nutrients