A chiropractor. you might've heard about them 'cracking your back' professionally
It’s the 3rd one! The O + O!!
Answer:
Your answer is E). Fossils in different layers will obviously be much older/younger than others.
Genetic drift happens by chance and can make an allele disappear completely from a gene pool, even if it was a desirable trait that should have been passed down to offspring. The random sampling style of genetic drift shrinks the gene pool and therefore alters the frequency the alleles are found in the population.
The first option for 1 and the second option for 2
