Amos calebgreen65 I really need some help

Explain why in any given geographical region, women tend to have lighter skins( by 3-4% on average) than men?

How do you think earths interior affects what is happening on the surface? 2. how do fossils support the continental drift hypothesis? 3. how does sea- floor spreading support the hypothesis of continental drift? 4.what do scientists observe when they studied the magnetic fields of rocks on the sides of mid-ocean ridges? 5. what is a tectonic plate ? 6. explain mantle convection 7.how can movements of the continents affect earths climate? 8. what occurs during drifting?

What could happen if two base pairs on a strand of dna or switched