How do the geography and geographical features of your area affect the weather in the area?

Ialready know the answers to these questions and they are on the attachment. but i just need to know why that answer is the correct one. plz asap! this is for a report that i need to email by 10!

Where is most of the fresh water on earth found a in the ocean b in glaciers and in ice caps c in rivers d in the soil

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