Please help Which is considered an abiotic factor in a marine ecosystem?

Biodiversity
Plankton
Salinity
Symbiosis

Look at the picture below . what does this picture represent ?

How is mitosis different in plants and animals? a. in animals, the cell membrane pinches together. b. in plants,the dna is one circular chromosomes. c. in plants, there are no sister chromatids. d. in animals, a new cell wall forms.

Which part of the cell is affected by the movement of molecules through diffusion, osmosis and active transport?