It is hypothesized that increased inputs of CO2 and other greenhouse gases from human activities could enhance the earth's natural greenhouse effect and raise the average global temperature of the atmosphere near the earth's surface. What is this enhanced greenhouse effect usually called?
El Nino-Souther Oscillation
Different parts of the earth's surface vary in their _____, or ability to reflect sunlight.
What chemicals deplete stratospheric ozone?
Halons and HBFCs
CFC stands for _______.
Where can halons be found?
In correction fluid
In fire extinguishers
CFCs remain in the troposphere because they are ______ in water and are chemically unreactive.
In 1987, 36 nations meeting in Montreal developed a treaty to cut emissions of CFCs into the atmosphere by about 35% between 1989 and 2000. What is the name of this treaty?
Rio Earth Summit
Most climate models are derived from models developed for weather forecasting, called _____ (GCMs).
A layer of ozone in the lower stratosphere keeps what percentage of the sun's harmful ultraviolet radiation from reaching the earth's surface?
The projected global change in _____ - weather averaged over decades, centuries, and millennia.