To move a crate across your basement floor, friction will be less if you
A. push with a stick at a downward angle.
B. pull with a rope making an upward angle.
C. both the same
D. not enough information
Answer: B
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How do nuclear power plants use nuclear fission to produce electricity?
What will be an ideal response?
A small flock of birds becomes stranded on an isolated island during a hurricane
Their population expands across the island, and over a period of several decades, the average beak size in the population becomes smaller, helping the birds eat the smaller seeds and insects found on the island. Which one of the following processes is best illustrated in this example? A) Gene flow B) Extinction C) Natural selection D) Genetic drift
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Indicate whether the statement is true or false