How did scientists calculate the rate of uplift of the Andes?
A) using a fossil of coral from a high rock
B) by radio-dating uplifted metamorphic rock
C) by radio-dating uplifted sedimentary rock
D) using tectonic data and knowledge of ice ages
Answer: B
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In aquatic biomes,
A) as water temperature increases, dissolved oxygen content does too. B) organisms must spend their whole life cycle in either a saltwater or freshwater biome. C) chlorophyll concentration is an index of net primary productivity. D) anadromous and catadromous fish can tolerate waters with virtually no dissolved oxygen.
Cyanobacteria are blue-green algae. Indicate whether the statement is true or false
Day and night have an equal length during a(n) ________
Fill in the blank(s) with the appropriate word(s).
Twice a day the National Centers for Environmental Prediction issues maps at all of the following pressure levels, except
A) 100 mb. B) 300 mb. C) 700 mb. D) 850 mb.