Large terrestrial regions with similar characteristics are
a. ecosystems
b. communities
c. populations
d. habitats
e. biomes
Answer: e. biomes
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What happens to different isotopes of oxygen in this figure?
A) Evaporation concentrates lighter isotopes in the resulting water vapor.
B) Precipitation forms ice that is enriched in heavier isotopes relative to seawater.
C) Melting of ice preferentially releases heavier isotopes back into the ocean.
D) All of these are correct.
The rock assemblage of sandstone, carbonate, and shale represents deposition on a(n)
____________________ continental margin. Fill in the blank(s) with the appropriate word(s).
Because of public pressure and environmental concerns about plastic water bottles, many colleges and universities have
A) switched to biodegradable bottles. B) opposed state bottle bills. C) lowered the cost of the product. D) banned sales of bottled water on campus.
What do studies of paleomagnetism show?
a. the northern and southern hemispheres have reversed position many times b. the ocean basins are young c. each continent once had its own magnetic pole d. the continents remain fixed and the north magnetic pole has moved e. all of these