The most abundant greenhouse gas in Earth's current atmosphere is
a. ?carbon dioxide (CO2).
b. ?nitrous oxide (N2O).
c. ?water vapor (H2O).
d. ?methane (CH4).
e. ?chlorofluorocarbons (CFCs).
ANSWER: c
Environmental & Atmospheric Sciences
You might also like to view...
A box is dragged at a constant velocity across a level surface by 6 N of force. What force of friction acts on the box?
A. More than 6 N B. Less than 6 N. C. 6 N D. Zero
Environmental & Atmospheric Sciences
How do geologists recognize gaps in the rock record?
What will be an ideal response?
Environmental & Atmospheric Sciences
Which of the following is the most important biological measure of radiation?
A) curie B) rad C) rem D) roentgen
Environmental & Atmospheric Sciences
Seasonally shifting wind systems associated with the annual cycle of returning precipitation are known as
A) Santa Ana winds. B) sea breezes. C) monsoons. D) chinook winds.
Environmental & Atmospheric Sciences