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David becomes famous for slaying the giant Goliath. True or false?

asked Mar 27, 2017

History
middle-school

2 answers

3 votes

80.2k views

Describe what an enzyme is and how it works according to the lock and key model

asked Mar 26, 2017

Biology
high-school

1 answer

3 votes

180k views

Why do satellites not fall to the Earth?

asked Nov 14, 2016

Physics
high-school

1 answer

4 votes

75.2k views

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