Metamorphic rock is formed by changing the nature of minerals of preexisting rocks. What could the preexisting rocks be?
A) metamorphic
B) igneous
C) metamorphic, igneous, or sedimentary
D) sedimentary
Answer: C
Environmental & Atmospheric Sciences
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Because of the concentration of people, automobiles, business enterprises, and industries in cities, they can never be sustainable
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
The most abundant gases in Earth's present day atmosphere (by volume) are ____
A) carbon dioxide and nitrogen B) oxygen and water vapor C) nitrogen and oxygen D) oxygen and helium
Environmental & Atmospheric Sciences
Describe or sketch how an erosional floodplain develops
What will be an ideal response?
Environmental & Atmospheric Sciences
Carbon dioxide currently has a concentration of ________ in the homosphere
A) 580 ppm B) 270 ppm C) 400 ppm D) 315 ppm
Environmental & Atmospheric Sciences