Answer: They do this to obtain the vital nitrogen that they need to grow.
Explanation:
A and C
They both can be compared to present or past objects to show how they have changed or evolved over time
Im almost certain the answer is D but theres a chance I might be wrong
Answer:
c
Explanation:
catalysts are used up in a chemical reactiob
Answer:
It develops over land and is cold and dry!
Explanation:
It's a continental air mass, so it develops over land! Maritime ones develop over water. It's cold and dry because it's a polar air mass, not tropical!
I hope that helped you!
