Answer:
The three main parts of the earth are the crust, the mantle, and the core.
Explanation:
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When climbing a mountain, we can observe transitions in biological communities that are analogous to the changes in biomes at different latitudes.
C. Reforestation is the right answer
I would think that an unweathered rock would be jagged while a weathered rock would be smooth because of water/wind or what ever weathered it.
A product of photosynthesis is glucose which is a sugar. This sugar(glucose) is food for the plants.