Mount st. helens was a cone-shaped mountain that formed when molten material reached the surface of earth and formed layers. cone-shaped mountains form as a result of which one of these events?

a
hurricanes

b
earthquakes

c
volcanic eruptions

d
sediment depositions

In 1994, telomerase activity was discovered in human cancer cell lines. although telomerase activity is rarely present in human somatic tissue, this discovery indicated that humans do contain the genes for telomerase proteins and telomerase rna. since inappropriate activation of telomerase may contribute to cancer, why do you think the genes coding for this enzyme have been maintained in the human genome throughout evolution?