Question

1]Define semi Permeable Membrane
2]What is the difference between circulatory system and double circulatory system?​

Answer 1

Answer:

Semipermeable membrane is a type of biological or synthetic, polymeric membrane that will allow certain molecules or ions to pass through it by osmosis—or occasionally by more specialized processes of facilitated diffusion, passive transport or active transport.

A circulatory system in which blood travels only once through the heart in one complete cycle of the body is called single circulation. ... A circulatory system in which blood travels twice through the heart in one complete cycle of the body is called double circulation.