Answer:
The cities have a much larger populations in smaller areas, which can cause more crime and overcrowding, along with pollution.
Quaternary period<span>, Cenozoic </span>era<span>, and Phanerozoic </span>eon<span>.</span>
The places by the equator are hot because the sun's rays are by or directly on the equator.
Not recycling/agricultural waste, oil spills, population growth, use of fertilizer/pesticides
