Why did virtually all countries in the world agree to ban the use of CFCs by 2020 for developed countries and by 2030 for developing countries?
A) to prevent acid rain
B) to reduce global warming
C) because there are cheaper coolants that work better
D) because of overwhelming evidence that they destroy the ozone layer
E) because of overwhelming evidence that they cause smog in cities
Question 2
A gas threatening Earth's ozone layer is
A) sulfur dioxides.
B) chlorofluorocarbons .
C) the greenhouse effect.
D) photochemical smog.
E) nitrous oxide.
Cottontails' ears have developed to hear even whisper-quiet sounds at incredible distances.
Smallest chameleon in the World
Distribution of the Ceboidea, or New World monkeys.
Oil the World’s Most-Used Fuel
The inequality of per capita emissions between the developed world and the developing world
Age structure for three countries (China)