Volcanic activity
fault lines
mnt. ranges
and siesmagraphs
Answer:
Testing positive for HIV means a high chance of death and a good chance of lower reproduction rates. But some people are immune to HIV, which makes them more evolutionarily fit, likely to live longer, likely to reproduce more, which would increase the frequency of the immune allele in the population. Over time, this increase in frequency of the gene that causes immunity could spread across the human race and cause it to evolve.
Answer:
one which is able to express itself outwardly in the presence of a recessive allele
Explanation:
The largest chunks of time in the geologic record are called EONS
