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Social Studies, 21.06.2019 22:00
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 06:30
97 points what types of changes have been made in the united states to protect people from earthquakes? a. communities are no longer located along fault lines. b. building codes ensure that structures can withstand shaking. c. warnings go off when an earthquake is expected, and people evacuate the area. d. barriers have been built to prevent flooding by a tsunami.
Answers: 2
Social Studies, 22.06.2019 10:30
Identify the example of when situation and time are key to assessing risk of harm in a research study: a study on the efficacy of a behavioral intervention for smoking cessation involves both adults and teenagersasking women if they have had an abortionresearch on the prevalence of hiv-infected individuals in communitiesa survey about sexually transmitted diseases
Answers: 1
Social Studies, 22.06.2019 18:20
New communication technologies, improved transportation, and advanced military weapons made it possible for countries to speed up acquiring territory. rule large amounts of territory. fight off competition from opposing nations. expand their economies, which aided in conguest.
Answers: 2
Mathematics, 15.10.2019 20:00
Arts, 15.10.2019 20:00
World Languages, 15.10.2019 20:00
Health, 15.10.2019 20:00
Mathematics, 15.10.2019 20:00
Mathematics, 15.10.2019 20:00
Mathematics, 15.10.2019 20:00
Mathematics, 15.10.2019 20:00
Health, 15.10.2019 20:00
Mathematics, 15.10.2019 20:00
Mathematics, 15.10.2019 20:00
History, 15.10.2019 20:00