It's some change in the conditions around the organism, which the organism can detect and respond to. A change in temperature, more light, or something physically poking the organism are examples.
DNA is a COMBINATION of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base.
Absolute time is the answer
Answer:
Allele frequencies change randomly each generation is the example of genetic drift.
I can’t see it it’s too blurry
