With immediate and sustained action to stop production of all ozone-depleting chemicals:

a. The ozone-hole problem will be solved immediately.
b. It will take about 5 years for the earth's ozone layer to recover to 1980 levels.
c. It will take about 30 years for the earth's ozone layer to recover to pre-1950 levels.
d. It will take about 60 years for the earth's ozone layer to recover to pre-1950 levels.
e. It will take about 60 years for the earth's ozone layer to recover to 1980 levels.


E

Environmental & Atmospheric Sciences

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In the United States, enough ____________________ are used each year so that, if linked end to end, they would reach to the moon and back seven times

Fill in the blanks with correct word

Environmental & Atmospheric Sciences

The ________ is the upper part of the Sun's atmosphere

Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences

The current distribution of soccer demonstrates that

A) a folk custom can become part of a popular culture. B) all sports are examples of folk culture. C) television has infused all sports into popular culture. D) American football is also an example of a folk culture. E) sport is more important in less developed countries.

Environmental & Atmospheric Sciences

Charge separation in clouds

A) requires collisions between ice particles and either snowflakes or graupel. B) is part of the collision-coalescence precipitation-formation process. C) is caused by the voltage difference between the ground and the tropopause. D) is most common in altocumulus clouds. E) is usually horizontal, not vertical.

Environmental & Atmospheric Sciences