Ineed to know this as soon as possible!

what term includes all the biotic and abiotic elements in an area?

a) ecosystem
b) population
c) biome
d) organ

About how much of the cell mass is watet

Do the following statements describe actin, myosin, both of the proteins or neither of the proteins? (a) contains a binding site for calcium (b) found in the i band (c) exists in a globular (g) form and a filamentous (f) form (d) contains a binding site for atp (e) is a component of the thin filament (f) is a component of the thick filament

The cell membrane controls what enters and leaves the cell. which of the structures in the diagram below is the cell membrane? — f оооо