Due in a few mins, please help Describe, how melanin protects folate circulating in the blood from UV damage?

What does all of the organ system in a human form

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures