Which energy source used to run an automobile produces the least amount of harmful emissions?
A. hydrogen
B. methane
C. natural gas
D. gasoline
Answer: A
Environmental & Atmospheric Sciences
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Which term refers to the number of people per unit of arable land?
A. agrodensity B. physiological density C. antidensity D. arithmetic density
Environmental & Atmospheric Sciences
A system is a combination of related parts that interact in an organized manner. Write an essay
describing how the Earth acts as a system with subsystems. What are these subsystems and how do they interact? What will be an ideal response?
Environmental & Atmospheric Sciences
Which of the following countries has the lowest population growth rate?
A. China B. India C. Brazil D. Russia
Environmental & Atmospheric Sciences
Hunters and gatherers, or foragers, did not modify their landscapes
a. True b. False Indicate whether the statement is true or false
Environmental & Atmospheric Sciences