Semi-conservative replication of dna refers to
the idea that (3.3)
a. dna molecules need to unwind before
replication begins
b. each new dna molecule contains two new
single rna strands
c. two strands of dna molecules run in
opposite directions
d. each half of the original dna molecule is
joined with a new complimentary strand

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.

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