In the U.S., although the number of dairy cows has declined since 1960, production has increased because yield per cow has tripled
Indicate whether the statement is true or false.
Answer: TRUE
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Earth's atmosphere is able to gradually refract light rays:
A) only when it is very dry. B) only when the sun is very high in the sky. C) because of the changing density of air as you get closer to the surface. D) because of air pollution that is present.
Generally, each mass-movement event is classified by:
a. the type of material involved b. the type of motion c. the velocity of the movement d. the environment where the movement takes place e. all of the above
Which of the following is the oxidizing agent in the conversion of a saturated fatty acid to an unsaturated fatty acid?
A) FADH2 B) FADPH2 C) NADH D) NADPH
Parallel tributaries are named for the ____
a. Mississippi River b. Amazon River c. Yazoo River d. Nile River