Chronic obstructive pulmonary disease and asthma, both of which are exacerbated by air pollution, are problems with what system of the body?
nervous system
respiratory system
endocrine system
digestive system
respiratory system
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The world's most populous cities, in order, from largest to smallest are:
a. Mumbai, Beijing, Mexico City, New York City, Sao Paulo b. Buenos Aires, Mexico City, Mumbai, Beijing, Seoul c. Cairo, Tokyo, Seoul, Mumbae, Mexico City d. Tokyo, Beijing, Seoul, Mexico City, New York City e. Mexico City, Beijing, Seoul, New York City, Tokyo
The intellectual roots of environmental determinism can be traced back to the ancient Romans, who speculated that human diversity resulted from both climatic and locational factors.
a. true b. false
A species becomes extinct when
A. individuals of two different species try to mate. B. all individuals of a species are eliminated. C. habitat change causes organisms to leave an area. D. All of the statements are correct.
Most of Earth’s freshwater is located within glaciers.
Indicate whether the statement is true or false.