Which of the following sources of iron would be of the highest quality?
a. iron deposits on the ocean floor
b. a field of spinach
c. a large scrap metal junkyard
d. a half-mile deep deposit of iron ore
e. soil that is high in iron content
C
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What were some key consequences from the break-up of Pangaea?
a. Rise of sea level, increase of shallow marine habitat, species diversification, climate change - mild and warm b. Rise of sea level, decrease of shallow marine habitat, species diversification, climate change - mild and warm c. Lowering of sea level, decrease of shallow marine habitat, increased species extinction, climate change - mild and warm d. Lowering of sea level, increase of shallow marine habitat, species diversification, climate change - increased glaciation
Hazardous waste deposited in ponds or lagoons
a. may evaporate into the atmosphere b. may enter groundwater when there are no liners or when liners leak c. may contaminate surface water d. all of these answers e. none of these answers
The troposphere varies in thickness with latitude
a. True b. False Indicate whether the statement is true or false
Freezing nuclei are a part of the _______________ process of forming precipitation
Fill in the blank(s) with correct word