The part of a neuron that contains the nucleus and keeps the entire cell alive and functioning is the

 Soma

Explanation:

The soma which is often referred to as the cell body. Is the surrounding of the nucleus (which is also called the powerhouse of the cell). And the dendrite, which is the tentacles of the soma, sends information to axon which then sends that information out to other neurons.

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humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of invasive species (such as new predators and food competitors), overhunting, and other influences. explosive, unsustainable human population growth is an essential cause of the extinction crisis.

explanation:

i didn't have the answer choices , but i tried my best.

as resources become scarce because of population growth, the growth decreases after few years due to lack of resources and food.