Instructions: Choose one answer from each pair of selections. In the single-cell model of Earth's general circulation of air, a large thermally driven convection cell is located in each hemisphere. Surface air flows EQUATORWARD | POLEWARD
EQUATORWARD
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Why is the human population currently experiencing exponential population growth after 10,000 years of fairly flat growth? How long can this growth pattern continue?
What will be an ideal response?
Hydrogen in fuel cells powers automobiles by
A) generating electricity. B) creating rapidly combustible hydrogen compounds. C) generating changes in gas pressures that move pistons in car engines. D) combining with equal parts of gasoline to create a fuel with extra octane.
?Numerous studies suggest that humans and other male animals may become feminized by exposure to endocrine disruptors.
Answer the following statement true (T) or false (F)
Which of the following statements is true?
A) Both heat and temperature are forms of energy. B) Neither heat nor temperature is a form of energy. C) Heat is a form of energy, but temperature is not. D) Temperature is a form of energy, but heat is not.