Which gas is the second most abundant in Earth's atmosphere?
a. oxygen
b. carbon dioxide
c. nitrogen
d. argon
e. hydrogen
a
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Describe how contact metamorphism occurs. What are the important factors that cause rocks to alter in
this type of metamorphism? What will be an ideal response?
Which condition is necessary for a population to grow?
A. Mortality must exceed natality. B. Stabilization must occur. C. Carrying capacity must occur. D. Birthrate must exceed death rate.
Photosynthesis involves
A) important reactions within the stems and roots of plants. B) the use of sunlight to produce food sugars and oxygen to drive biological processes. C) a process known as respiration. D) the release of stored carbon dioxide in a process using sunlight.
In the early 1900s the German meteorologist ________ made a strong case for continental drift.
A. Diane Carlson B. Alfred Wegener C. Charles Plummer D. Ben Franklin E. George Bush