Within the Earth is molten mineral matter called ________
A) extrusive material
B) bedrock
C) soil
D) magma
E) rock
Answer: D
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Where are the coldest regions of large continents usually located?
A. in their interiors B. on their western coast C. on their eastern coast D. on either coasts
The short half-life of Uranium 238 allows it to be used for dating events within the past 20,000
years. Indicate whether the statement is true or false.
The trophic pyramid, from base to top, is ________. The amount of energy that is transferred from one level to the next is ________
a. primary producers, primary consumers, consumers, top consumers; 50% b. top consumers, consumers, primary consumers; primary producers; 50% c. top consumers, consumers, primary consumers; primary producers; 10% d. primary producers, primary consumers, consumers, top consumers; 10%
When will a protein have the lowest solubility?
A) when the pH is very low B) when the pH = 7 C) when the pH is very high D) at its isoelectric point