Because people use too much gas and oil. If they made plant biofuel people wouldn't spend a lot of money and we wouldn't waste oil.
The answer is ions, compounds & neutrons don’t really make sense & isotopes are different from everything this question is asking
Answer:
the prey of crabs would be positively affected, and the predators of crabs would take a negative effect to the extinction of crabs
Explanation:
small clams, starfish, snails, worms, squid, mussels, shrimp and small fish would all be positively affected if crabs were to go extinct, because all that is listed are part of a crabs diet, for both large and small crabs. the ones which would be negatively affected would be the predators of crabs, such as cobia, eels, striped bass, jellyfish, red drum, American eels, sharks, dogfish, sea rays, and smaller fish. they would take a negative affect to the extinction of crabs because as said before, these are all predators of crabs, so the extinction would remove them from their diet, forcing them to find other sources for food
Cell membranes restrict diffusion of highly charged molecules, such as ions, and large molecules, such as sugars and amino acids.
