The growth rate from a few thousand people about 160,000 years ago to 7.5 billion in 2017 represents ________ growth.
A. logarithmic
B. linear
C. exponential
D. algebraic
Answer: C
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Once living organisms reach a balance with their environment, they do not undergo any more natural selection
a. True b. False
Where does the sand on a beach come from?
What will be an ideal response?
Sachiko and Fred are having a discussion about the scientific method. Sachiko makes the comment that every time she sees people carrying open umbrellas, she also sees car accidents. This is a(n) ________
A) theory about umbrellas B) observation C) hypothesis D) theory about car accidents E) scientific study
In the whole-mantle convection model, what feature balances the deeply descending lithosphere by transporting hot material toward the surface?
A) Kimberlites B) Decompression melting C) Mantle plumes D) Rift zones