Answers: 2
Social Studies, 21.06.2019 22:00, beccahaileyowzryu
24-karat gold is considered to be pure gold. 18-karat gold is considered to be about 75% gold. what is 18-karat gold considered a mixture rather than a pure substance? a) it has a variable composition of other elements and minerals. b) its color is different than pure gold. c) the gold atoms are not arranged in a repeating pattern. d) it can be melted and transformed into a different substance.
Answers: 2
Social Studies, 22.06.2019 12:30, kenniedalany
Give an example of a situation in which an individual's pursuit of economic self-interest may not benefit but instead harm the rest of society
Answers: 1
Social Studies, 22.06.2019 16:00, ciarakelly636owuiup
The controlled use of fire by hominids: (a) limited the expansion of hominids into certain environments, such as dry grasslands. (b) decreased the amount of food energy available in the hominid diet. (c) contributed to geographical expansion and food production techniques in positive ways. (d) has been shown to contribute little to the digestive process of hominids.
Answers: 3
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