It is C or A,because i did this in school and it was a chemical reaction.
Answer:
true
Explanation:
this helps them prove there tests out
Answer:
If i remember, correctly it would be the Environment and the things that live in it.
Explanation:
Answer:
If there are no plants in the tank, they will run out of oxygen because there is nothing producing oxygen.
Explanation:
Answer:
genes
Explanation:
a gene is a short section of your DNA
