Multiple Choice
Nitrogen (N²) is
A) a by-product of photosynthesis.
B) relatively inert,with cycling in the environment keyed to the activity of bacteria.
C) a product of the radioactive decay of a form of potassium in the crust.
D) now measured at 20.946% by volume in the homosphere.
E) is not needed to support life on Earth.
Correct Answer:
Verified
Correct Answer:
Verified
Q56: The higher the UV Index, the faster
Q64: Air pressure is produced through the motion,
Q135: Air pressure is only exerted downward.
Q137: Which of the following is true?<br>A)seventy-five percent
Q138: Three criteria used for classification of the
Q140: Which of the following is true of
Q143: Temperatures within the stratosphere<br>A)decrease with altitude according
Q144: What is the environmental lapse rate,and in
Q146: The ultraviolet index (UVI)<br>A)is used to measure
Q147: With regard to carbon monoxide (CO),which of