Which of the following is not necessary for a hypothesis to be accepted by the scientific community?
A) There must be alternative hypotheses proposed.
B) It must be testable.
C) It must be based on observations or facts.
D) It must predict something other than the observations it was based on.
A
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The United Nations projects that by 2030 the urban population will make up over ________ of the total Earth's population.
A. 20 percent B. 60 percent C. 40 percent D. None of these are correct
Each number on this figure refers to a location with groundwater in a subsurface material that is consistent in character across the entire figure. Of these locations, which would likely have the slowest groundwater flow?
A. 1 and 2 B. 2 and 3 C. 3 and 4 D. 4 and 5 E. 1 and 5
In terms of remote sensing, geographers ________
A) should not stop using maps and field study B) have shown very little interest C) will someday identify one remote sensing type that is best for all purposes D) have never used remote sensing E) should never use remote sensing
"Night is winter" is best applied to the ________ climate
A) Af B) Am C) BWk D) Csa E) Dfa