They are unicellular and not a multi-cellular, so your answer would be Option D)<span>They are multicellular.
Hope this helps!</span>
Answer:
carbon dioxide raised
Explanation:
The first thing that pops into my head is something my grandpa told me and that was the carbon dioxide levels raised exponentially because of the wailing period. the led to many environmental changes across the globe.
The person above is correct :)
process in which : A rock forms , changes from one type of rock to another , forms again by processes on and in the Earth
