Different estimates of earthquake magnitude are derived from different methods based on local shaking (Richter scale), body waves (mb), surface waves (MS), or seismic moment (MW).
Answer the following statement true (T) or false (F)
True
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Where is the widest continental shelf located?
A) The Arctic Sea north of Siberia B) The western edge of South America C) The margin surrounding the Hawai'ian Islands D) The Emperor Seamounts
A pharmaceutical company wishes to study a possible new headache medicine. They are doing human trials with 1000 volunteers and need to ________
A) put all women in the control group and all men in the experimental group B) give both control and experimental groups the same amount of the new medication C) control for the type of headache—stress, migraine, or other causes D) have 10 volunteers in the control group E) divide the groups by level of health
Which of the following describes the atomic makeup of the backbone unit of a protein?
A) 2 carbon atoms, 2 nitrogen atoms, 2 oxygen atoms B) 3 carbon atoms, 2 nitrogen atoms, 2 oxygen atoms, 1 hydrogen atom C) 3 carbon atoms, 1 nitrogen atom, 1 oxygen atom, 1 hydrogen atom D) 3 carbon atoms, 2 nitrogen atoms, 2 oxygen atoms, 2 hydrogen atoms
The Sun's principal outputs consist of the solar wind and radiant energy
Indicate whether the statement is true or false