A membrane that allows only some materials to move in and out of the cell is B. Semipermeable.
Biologists do not fully understand DNA because there are constant changes and new discoveries developing.
He performed an experiment that explain what occurred on primitive earth billions of years ago. He sent an electrical charge through a flask of chemical solution of methane, ammonia, hydrogen and water. This created organic compounds including amino acids
Hopes this help you.
<span>And algal bloom occurs
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