The cell membrane in humans and animals behaves most like the second option. A police officer who allows select people to enter and leave a crime scene. The cell membrane allows particles through to the cell that are vital for the cell to function, while keeping out unwanted substances.
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Answer:
The evolution of plant communities at a site over time- from pioneer species to climax vegetation. • At each stage of the succession the plant community. hope it will help you
Answer:
Cretaceous
rex live? T. rex lived about 66–68 million years ago during the Cretaceous Period in the western United States, including Montana and Wyoming.
Explanation:
<span>If unprotected cells are exposed to salt, or a salt water solution where the concentration of the salt is greater than the concentration in the cellular fluid; the water in the cells will be drawn out, "shrivelling" the cell.
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(Re-post)
Answer:
Producers create their own energy using photosyntehsis. They absorb light and water to make glucose. Consumers have to eat, they can't make their own energy.
Explanation:
