The Decline in Mortality Rates Since the Early 1900s Is

question 3

True/False

The decline in mortality rates since the early 1900s is due to advances in medicine and sanitation.

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Definitions:

CFCs

Chlorofluorocarbons, man-made chemical compounds used in aerosols, cooling devices, and as solvents, which have been found to deplete the ozone layer.

Montreal Protocol

An international treaty designed to protect the ozone layer by phasing out the production of numerous substances believed to be responsible for ozone depletion.

CFCs

Chlorofluorocarbons, a class of chemical compounds used in refrigeration and aerosols, which have been found to deplete the ozone layer.

Ozone Hole

A depletion of the ozone layer in the Earth's stratosphere, particularly over the Antarctic, caused primarily by human-made chemicals.