What effect does human activity have on many ecosystems?

It destroys Habitats

Explanation:

All the other ones make absolutely no sense. Examples of why this is right is deforestation and lack of recycling causing oceans to be polluted.

significant amounts of nitrogen oxides, carbon monoxide, and other pollution

explanation:

passenger vehicles are a major pollution contributor, producing significant amounts of nitrogen oxides, carbon monoxide, and other pollution. in 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air.

21 stacks

step-by-step explanation:

divide 630/30

21 stacks

enjoy!