How may the chemical make-up of a 200-year-old fossil differ from the chemical make-up of a 100- year-old fossil?

There is only one climate type in motion across the world at a time

How does central place theory explain patterns in the size and distribution of cities?

Choose the factors that influence the climate of the u.s. northeast. distance from the equator proximity to large urban areas elevation secluded area distance from a large body of water