Conifer tree is the tree that the leaf is slender like needle, it is evergreen tree more, material is general softer, some contain colophony , reason calls soft material again, its grows in elevation 100 ~ 1500 meters commonly, have economy and ornamental value.Conifers appeared 280 million years ago before any other trees.Conifers are believed to be the oldest trees on earth。
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1. Cohesion is the attractive force between water molecules
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Granite is like a mix of color and it looks nice amd modern, and marble is a nice clam looking thing.
2, because a theory is not a law that can not be changed, and new evidence can change a theory.
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e.the ball exerts more force because it is smaller
