Answer:
C
Explanation:
Increasing temp causes increased molecule movment in sample 2
The answer is 
. A magnesium atom has 12 protons and an arrangement of [2, 8, 2]. When you lose two electrons, arrangement becomes [2,8] and the atom becomes a positively charged ion
Plants extract the carbon dioxide from the air and use it in photosynthesis process to feed themselves.
I believe its the first one because manganese is mn and IV is 4 but the cross thing thing will making it the second one but then you have to simplify making it the first one i hope that helps:)
The answer is A, biogeochemical cycles.
