Answer:
carbon dioxide is a main product of cellular respiration that is made by the Krebs cycle
I would give them water and when they start swimming it's a proof that they have been alive, after all, how would they start moving if they have been dead
The answer is to the question is gravity
Answer:
I wanna say air land and water.
Explanation:
I say this instead of birds in the air, trees on land, orgasms in water, because there are a lot more organisms that can be affected and oil spills and water can also affect our drinking water and when it evaporates can cause acid rain.