This means that a single carbon atom can form up to tetravalent bonds with other atoms
The answer is B :),this sentence has to be longer LOL
Answer:
Active Transport
Explanation: it is the movement of dissolved molecules into or out of a cell through the cell membrane.
Hope this helps
Plz give me Brainliest.
I think it's either the Forest or grassland though it might be Forest, just saying
One factor is resting and exercising
stress and peace