Where are the five principal areas of population concentration in sub-saharan africa?

Explain why phospholipid molecules form a bilayer. (3 marks)

Need an answer asap 45 points and brainlest to the first person to answer why do scientific theories, such as biological and chemical evolution, represent the strongest explanation of the changes observed in the fossil record. must be in sentence form how can scientific theories on evolution and the fossil record change over time? must be in sentence form

How do the evolutionary chart and the video support the claim that all living things are made up of cells?