Special characteristic of the respiratory membrane is very thin diffusion membrane.
The respiratory membrane allows gases to be exchanged-oxygen goes in and carbon-dioxide goes out from the body. That process is called diffusion and follows the laws of partial pressure (<span>movement of a gases from a high to a low concentration)</span>.
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the ability to produce clean water is an index of water quality based on six attributes
I believe it is Mountain Breeze.
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B)Cyclins regulate the timing of cell cycle
