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Gemstones are commonly found in pegmatites, which are igneous rocks that are a. exceptionally mafic b. exceptionally coarse grained c. exceptionally fine grained d. extrusive, forming from lava

High human population have had a negative effect on what issue? a. demand for consumer goods b. ability to staff armies c. business profits d. biodiversity

What was rhe biggest effect that new technology had on farm workers ? many works lost their jobsmost works learned new skills most workers become more efficient many workers could earn more in less time