Weegy: Most of the rocks in Earth's crust belong to silicates.
User: What are the two classes of pure substance
Weegy: Elements and compounds are the two classes of pure substances.
User: Which of these conditions does not contribute to the weathering of rock on earth surface
Weegy: Constant high pressure does not contribute to the weathering of rock on Earth's surface.
User: Which of these conditions does not contribute to the weathering of rock on Earth surface? Exposure to air, variable temperature, abundance of water, or constant high pressure
Weegy: Constant high pressure does not contribute to the weathering of rock on Earth's surface.
User: what is true about carbon
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