Answer:
A which is coal ok tell me if I am right
Single celled organisms such as amoebas, especially those that live in fresh water, continually gain water from their surrounding environment by osmosis. This water is pumped into a contractile vacuole which fills with fluid and periodically fuses with the cell membrane, releasing its contents to the exterior. Thus the amount of water actively transported out of the cell is equal to the amount of water entering the cell due to osmosis and there are no variations in the tonicity of the cell. This is homeostasis at a simple level. Without the contractile vacuole, the amoeba would continue to absorb water until its cytoplasmic contents were diluted to such an extent that metabolism no longer occurred and it would die.
True Salinization mowers crop yields
The gametes are formed by cellular reproduction process of meiosis.
Meiosis is the cell division that splits the chromosomes into half the number resulting in four haploid cells. The daughter cells are completely different from the parent cell.
Hence the option Meiosis is the right answer
