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The majority of the elements essential to life are found in what part of the periodic table
answered
Feb 23, 2018
Chemistry
high-school
4
votes
92.1k
views
True or false: time of day is also a factor that increases everyone's risk
answered
Jul 1, 2017
Health
high-school
0
votes
129k
views
Which of the following is a possible ancestor to modern humans? a. Australopithecine Afarensis b. Australopithecine Robustus c. Neanderthals d. Apes and Chimpanzees
answered
Apr 14, 2017
Biology
middle-school
5
votes
168k
views
Which of these landforms has the greatest relief? A. a large delta B. a wide valley C. a gentle hillside D. a steep mountain
answered
Feb 15, 2017
Geography
high-school
1
vote
155k
views
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