What are the long-term health consequences of exposure to air pollution?
What will be an ideal response?
Over time, chronic exposure to air pollution inhibits the body's natural defenses making people more susceptible to asthma, chronic bronchitis, emphysema, lung cancer, heart attack, and stroke. About 7 million people die every year from the effects of air pollution.
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HIV/AIDS is a(n) ___________ disease that is also transmissible from person to person.
Fill in the blank(s) with the appropriate word(s).
Which of the following defines Earth's radiative equilibrium temperature?
A. the average temperature Earth must maintain to prevent the oceans from freezing solid B. the temperature at which solar radiation and infrared radiation are absorbed at equal rates C. the temperature at which the Earth radiates energy at maximum intensity D. the temperature at which rates of evaporation and condensation on the Earth are in balance
"Sea salt" contains only sodium chloride
a. True b. False
Which feature is most likely to be exposed only at low tide?
A) a sea arch B) a wave-cut platform C) a sea cave D) a sea stack