Which organism is responsible for clean up in this ecosystem?

If a solution had a ph of 7 what is the solution

If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion

Is a pencil falling to the floor anon contact force, a force, or a contact force