Of the following gases, those that are greenhouse gases:
A. carbon dioxide and water vapor
B. oxygen and nitrogen
C. carbon monoxide and oxygen
D. argon and helium
Answer: A
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Writing just at the start of the Industrial Revolution, Thomas Malthus argued that population growth
A) would exceed the ability of people to feed themselves. B) was insufficient to meet the needs of industry. C) presented numerous opportunities for technological innovation. D) was so low, and food so abundant, that people would become increasingly obese. E) and procreation were fundamental rights of human beings.
Why isn’t “0” at the far left of the scales?
This form of air pollution is created when sunlight transforms gases and aerosols: ________
Fill in the blank(s) with the appropriate word(s).
Which of the following is an example of a closed system?
A) a forest B) a river drainage basin C) an automobile D) the Earth (in terms of matter)