A generally accepted, thoroughly tested explanation for a set of observations is a:
A. Hypothesis
B. Scientific method
C. Scientific Law
D. Scientific Theory
Ans: D. Scientific Theory
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The actual age of the volcanic rock on Midway is about 27.7 million years. Suggest a reason why your answer for problem 3 differs noticeably from this.
Which of the following is an example of an epidemiological study?
A. The cancer rate of people living downwind to a nuclear power plant was compared with those living upwind. B. Rats were given high concentrations of arsenic for six months and the control group was given a placebo. C. A study of drug overdoses in Los Angeles revealed that cocaine cut with animal deworming compound is dangerous. D. A man in Phoenix ate a banana and died riding his bicycle on a crowded street in the middle of the summer.
Environmental groups for secondary and postsecondary (college) students help participants
A. Develop their organizational skills B. Become ecologists C. Come together to multiply the efforts of people with the same goals and ideals D. Learn how to become effective radical environmentalists E. Come together to multiply the efforts of people with the same goals and ideals, and also help them develop their organizational skills
Is the rate of Earth's rotation increasing or decreasing?
A. It is increasing. B. It is remaining relatively steady. C. It is decreasing. D. It is increasing and decreasing in cyclic fashion.