Answer:
C
Explanation:
Dead zones are are areas of low oxygen or hypoxia. They are usually caused by nutrient pollution that leads to algae blooms, but there are other factors that contribute
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Answer:
b. energy loss in machines
Explanation:
It is an undesirable effect because it causes loss in energy in a machine which most likely requires a lot of energy to function. Therefore, it is undesirable as the machine will not function properly.
Answer:
something the economy can buy with its own money for own personal use
Explanation:
