I think they are the constituents of granite. Granite is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture. It is the most widespread of igneous rocks, underlying much of the continental crust. It is mined as either crushed stone or dimension stone mainly using open pit mining methods.
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A) Apt is created in the light reactions and is used in the Calvin cycle
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Environmental change results in the environmental ecosystem to be able to adapt to a new environment to survive the impact of environmental change can cause a decrease in the amount of organisms living in that ecosystem and without one of the organism living in the ecosystem the other organism supports on the other organism for food/energy will be scarce resulting in a decrease of species eventually dying out.