In many scientific disciplines, hypotheses are tested by direct laboratory experiments. Explain two reasons why direct laboratory experimentation is not always possible in geology
What will be an ideal response?
The number of variables is too large.
The rate of the process is too slow.
The pressure and temperature conditions are too extreme.
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How do trees counteract global warming?
A) They are carbon sinks, taking carbon dioxide out of the air. B) They shade Earth's surface. C) They produce oxygen. D) They transpire water vapor into the air.
Evaporites consist of minerals precipitated from water.
a. true b. false
On its slow journey through the crust, mafic magma evolves into intermediate magma by differentiation and assimilation of ________.
A. silicic rocks B. gabbro C. basalt D. mantle rocks
Spreading at mid-ocean ridges tends to occur in increments rather than continuously.
Answer the following statement true (T) or false (F)