B) Cell wall
The cell wall is a structure important cell protection and shape. It is necessary for the survival of unicellular organisms
Answer:
There would be more Sea Urchins
Explanation:
There would be more Sea Urchins because there would be nothing hunting them. Causing their population to increase.
I believe it's genes. Your parents mixed genes to create you.
Yes most of them do. That is one of the main reasons why dogs get spayed/neutered. In order to give birth, You need to of had your period first. So the animals that can give birth have a period. I don't know how long it is though. I am also not sure about fish, just mammals.
