Pathogens and run off from factories, oil spills and host of other poisons are threatening these places
What do Enzymes enable cell reactions to do? proceed at normal temperature, lowers the activation energy needed for reactions to being. ... normal active energy is too high so this allows the reactions to occur at body temp.
Heat is considered as a water pollutant because it decreases the capacity of water to dissolve oxygen, and it increases the rate of metabolism fish. Valuable species of game fish cannot survive in water with very low levels of dissolved oxygen.
The answer would be C) reproduce or the third option.