John lakes hiking he observes that whenever he takes up a hill he breeds heavier than when he was on flat ground which two statements explain why this happens

The earth's polarity has switched many times through history as evidence by what wh the earth clorets he has switched many times throughout history as evidence by what

Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?