A person standing upright inside a rotating orbiting space station experiences
A. a normal force.
B. a support force.
C. pressure against a supporting surface.
D. all of the above
Answer: D
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What is silviculture?
What will be an ideal response?
A woman has a large garden and decides this year she will not let the pests get beyond control. At the earliest sign of insect pests, she applies an organic insecticide and continues to apply it every month throughout the growing season
The next year the woman decides not to use any insecticides, thinking that she must have eliminated the pests with the prior year's treatments. Unfortunately, the pests reappear in numbers greater than she has ever seen before, and her crops are destroyed. Investigating this phenomenon, she learns that she has just experienced a phenomenon known as A) resurgence. B) pesticide resistance. C) natural selection. D) emergence.
Which of the following elements is named for a continent?
A) As B) Au C) Eu D) all of them
Refer to Figure 25.9, the Jackson, Michigan, topographic quadrangle. What is the scale of this map?
Convert this to a verbal scale. Show your work. What is the contour interval?