How many times did the supercontinents exist during the past 3 billion years of Earth history?

a. 1~2 times
b. 3~4 times
c. 5~10 times
d. More than 10 times


Ans: b. 3~4 times

Environmental & Atmospheric Sciences

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The temperature at which condensation takes place is the _______________ temperature

Fill in the blank(s) with correct word

Environmental & Atmospheric Sciences

Gnomonic projection

What will be an ideal response?

Environmental & Atmospheric Sciences

Use the completed chart from problem 10 and Figure 11-2 (showing the angle of incidence of the noon Sun) to estimate the percentage of radiation passing through the atmosphere to the surface at noon on June 22 at the following latitudes.

Environmental & Atmospheric Sciences

A(n) ____________ causes damage by interfering directly or indirectly with the mechanical or biochemical processes

of an organism. Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences