Evolution happens slowly over time
only occurs below the species level
is any change in the dna of an organism
can be caused by genetic drift
can be caused by natural selection

The answer is can be caused by natural selection because natural selection is when organisms adapted and survive in their environment due that there are different species which is evolution.hope this helps. please add brainlist

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

a community that experiences major changes undergoes progress