Provide a brief explanation of the Montreal Protocol
What will be the ideal response?
ANSWER: The discovery of the ozone hole added urgency to the development of an international agreement called the Montreal Protocol, which was signed in 1987. This agreement, one of the first in United Nations history to be ratified by every member, established a timetable for diminishing CFC emissions and the use of bromine compounds (halons), which destroy ozone at a rate 50 times greater than do chlorine compounds. One sign of the success of the Montreal Protocol is that since the 1990s there has been a decrease in the atmospheric concentrations of most ozone-depleting gases.
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The Appalachian Mountains are:
a. tilted fault blocks. b. a chain of composite cones. c. flood basalts. d. folded. e. horsts.
The condensation nuclei most favorable for producing clouds (called cloud condensation nuclei) have radii of ____________________ µm or more
Fill in the blank with correct word.
RCRA is a U.S. law enacted in the 1970s to ________
A) regulate how hazardous waste is handled B) protect endangered species C) reduce environmental levels of the 12 most toxic chemicals, called the "dirty dozen" D) regulate greenhouse gas emissions from power plants E) restrict use of off-road vehicles in national parks
What national efforts is the United States making to address climate change?
What will be an ideal response?