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Facts about the sycamore tree.

A lot of great and detailed information on sycamore trees!

Great info about these cool trees.

This site shows you some about how many species palm trees there are and about some history

A site about sycamore trees.

Tells a lot about different types of palm trees

Dictionary definition

Contains useful facts about palm trees.

Good info. on walnut tree

This is a big walnut tree getting cut down

This site relates geology and climate change, and how climate change is shown within geological records. It also has a part on the greenhouse effect and other changes in the atmosphere.

Evidence for climate change is preserved in a many of earths of geological settings, including water and lake sediments and particles, ice sheets from ice ages and modern times, and fossil tree rings because thicker rings mean more water that years. Rock also provides intricate and detailed information about the climate. If a certain rock like limestone is found where it is a dessert than that means that there was once an ocean there which would effect the climate. There is geological evidence that when more co2 is released into the atmosphere it tends to make the earth heat and with that water levels rise. This is evident through the said process of rock types that was described. Co2 that is absorbed into tree rings also offers evidence of this. Overall, geology offers many different scientific clues about how to tell the climate of ancient times an places. Geology can be helpful to climatologists who want to compare data and prove their point of view.

National Geographic Article about sequoia trees

Website about American sycamores