Linked genes: a. undergo crossing over of sister chromatids at a high rate.
b. tend to be close together on a single chromosome.
c. are found on different chromosomes.
d. always assort independently.

b. tend to be close together on a single chromosome.

Explanation:

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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.

c. live where it’s cold and icy