The sea is salty because
A) it contains salts from Earth's crust that have been dumped into the ocean and dissolved.
B) marine organisms manufacture salts.
C) rainwater is salty.
D) the mantle is salty.
Correct Answer:
Verified
Q1: Volcanic mountains are produced by
A)tectonic compression.
B)tectonic tension.
C)tectonic
Q3: Earth's landforms are built up by
A)erosion.
B)deposition and
Q4: Humans shape Earth's surface
A)to a small degree.
B)to
Q5: Earth's oceans
A)occupy half of Earth's surface.
B)each have
Q6: Groundwater is a nonrenewable resource because
A)it takes
Q7: What percentage of Earth's water is freshwater?
A)3%
B)25%
C)50%
D)85%
Q8: Groundwater is defined as
A)water that resides underground.
B)Liquid
Q9: The water cycle includes water in the
A)atmosphere,
Q10: Rivers collect water from runoff and
A)flooding.
B)groundwater.
C)evaporation.
D)condensation.
Q11: The water table is
A)located 100 feet under
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