How are rocks different from minerals? a) rocks are a pure substance and minerals are all mixtures. b) rocks have no physical or chemical properties similar to minerals. c) rocks are made up of at least two minerals, but minerals are not made up of rocks. d) minerals are made up of at least two rocks, but rocks are not made up of minerals.

(1) which phrase describes an important agricultural change that occurred during the mississippian period? (a) first cultivation of wild grains (b) expansion of marsh elder farming (c) spread of corn agriculture (d) gathering of nuts and berries (2) which group of native americans use northwestern arkansas as it’s traditional hunting grounds? (a) osage (b) quapaw (c) woodland (d) caddo

Quais são as consequencias (positivas e negativas) da extração dos minerais metálicos

What has been a consequence of human economic development in advancing nations? a) subsistenceb) conservationc) photosynthesisd) pollution