Geo political zones and their state​

Seed plants that lived during the carboniferous impact life on earth today because a. they are the ancestors of all plant life on earth. b. their remains formed coal, which is an important resource. c. they produced fossils that are used to date many geologic events. d. their presence caused oxygen levels to drop, allowing animals to evolve.

In stage 2 farmers used the land primarily to grow food for their families and their small communities.

What part did glaciers play in forming the great lakes?