1. What is a semipermeable membrane? 2. Make a list of molecules that enters the cell by diffusion and another list for molecules that get out of the cell by the same diffusion process.
3. (Reflexive questions) Name 2 life process that needs diffusion to occurs. Explain it.

Compare the composition of the moon's surface with the composition of the earth's surface.

Why does miranda have that particular vision of dr hildesheim answer?

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of