They are considered nonrenewable resources because once they are used, they are gone forever, and we are using way more than the Earth can produce. Your answer would be B!
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True.
In the upper layers of the atmosphere, it blocks UV radiation from the sun; however, in the lower layers, it is a pollutant.
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What is the skull mainly composed of how many cranium?
The skull is composed of eight cranial bones (cranium). Cranial bone is the bone that protects the top part of the brain. If we are generally speaking, the skull consists of 22 bones.
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