White blood cells which forms the immune system
Well, some theories are stupid and some are valid. First, scientists believe that we (humans) evolved from apes. I don't think that is valid, they have no proof. But I do believe that over time, animals have evolved from ancestors. Say birds didn't have wings, Over time God (or whatever you believe) gave them wings so it would help them. Some of those theories are that what influenced scientific debate.
15×3=45 because p=m.v so simply finish this question.
Answer:
true or so google says lol
The cell wall is the protective, semi-permeable outer layer of a plant cell. A major function of the cell wall is to give the cell strength and structure, and to filter molecules that pass in and out of the cell. A cell is the smallest part of an organism that still contains that organism's elements.
