A hypothesis can best be described as ________
A) a proposed explanation that can be tested
B) a comparison between groups with an explanation for differences
C) an explanation that has been tested many times
D) the science of asking questions and finding concrete answers
E) a proven fact
A
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All are true except
A. Most of the surface of Antarctica is covered in ice and snow. B. The Transantarctic Mountains are an extension of South America's Andes Mountains. C. The Antarctic was never part of Gondwanaland. D. The majority of Antarctica's terrestrial extent lies in East Antarctica.
What happened to the "leftovers" from the formation of our solar system?
What will be an ideal response?
A pharmaceutical company wishes to study a possible new headache medicine. They are doing human trials with 1,000 volunteers who experience frequent headaches. The researchers will need to ________
A) control for the type of headache—stress, migraine, or other causes B) have 10 volunteers in the control group C) put all women in the control group and all men in the experimental group D) give all 1,000 volunteers the same amount of the new medication
What is Papua New Guinea's most valuable export?
a. clothing b. workers c. minerals d. cassava e. sugar