Answer:
There are two types of cell membranes. Either open or closed. Open is when other particles can get in or out. Closed is the opposite.
I hope that helps!
Biology is the study (2) of life (1)
Answer:
The results of your testing suggest there was a genetic change in your skin cells
Answer:
Actually, the ELECTRON: Negatively charged particles in an atom. Electrons, which spin around the protons and neutrons that make up the atom's nucleus, are essential to chemical bonding.
Explanation:
Answer: because all planets move
Explanation: