What do astronomers expect will be left at the center of our solar system once the Sun has gone through all its life stages?
A. a red giant
B. a wormhole
C. a planet-sized diamond
D. a black hole
Answer: C
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Successful recovery plans under the Endangered Species Act have benefited the
A. American alligator B. Peregrine falcon C. Bald Eagle D. Brown Pelican E. Burmese python
Intrusive igneous rocks differ from extrusive igneous rocks primarily in their
A) chemical and mineralogical makeup B) crystal sizes C) plate tectonic setting D) degree of heat and pressure involved in magma generation
Which of the following reflects one of the current favored explanations of African poverty?
A) tropical environments B) lack of navigable rivers C) infertile soils D) depopulation due to the slave trade E) dependence on foreign food-aid
What term denotes blocks of older rock enclosed in a body of younger igneous rock?
What will be an ideal response?