The function of the plasma membrane is to only allow certain items through, while blocking the rest.
I think the answer you are looking for is oxidative phosphorylation! :)
Answer:
They are all important parts of an ecosystem. Producers are the green plants. They make their own food. Consumers are animals and they get their energy from the producers or from organisms that eat producers.
d. They can be concentrated in an organism’s fat tissues.
This is referred to as biomagnification -- the POPs become more concentrated as they move from one animal to another. This is a main concern because even trace amounts, in animals at the bottom of the food chain, can cause toxicity to animals at the top of the food chain.
