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.
<span>"D.how living things are interconnected with their environment</span>" is the correct answer. Ecology has to do with systems of environments as a whole, and the organisms that live there.
I think its D but I'm not sure
Its atomic mass determines its properties? hope this is correct
Answer:
A
Explanation:
Activation energy is the amount of energy required to reach the transition state, so A would seem like the best fit, because the heat is being ADDED to reach the state. (in this situation, starting the reaction)
