Plant cells have what is perhaps the most complex outer coverings. Plant cell walls are made largely of cellulose which forms strong, highly rigid, almost indigestible coverings that protect the cell and gives it shape.
2, because a theory is not a law that can not be changed, and new evidence can change a theory.
Answer:
It is NOT D
Explanation:
On edge, the answer is NOT weathering
It would show that is universe in not expanding but contracting