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Enzymes are: A. fats. B. sugars. C. starches. D. proteins
answered
Jan 3, 2018
Biology
high-school
5
votes
113k
views
These species grow uncontrollably and can take over and destroy an ecosystem: native endemic invasive threatened
answered
Oct 23, 2017
Biology
high-school
0
votes
38.8k
views
What invention increased crop yields and made soil more porous? the sickle the plow the axe chemical fertilizers
answered
May 4, 2017
History
high-school
4
votes
60.3k
views
The nucleus of an atom has _____. A central core that is compact with protons and electrons A negative overall charge A central core that is compact and contains protons and neutrons Contains electrons
answered
Apr 17, 2017
Chemistry
high-school
7
votes
21.3k
views
What is the fraction for 0.2
answered
Feb 23, 2017
Mathematics
middle-school
3
votes
189k
views
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