vghchrihanns vghchrihanns

26-08-2016
Biology

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How do you call the chemical substances that have a calming effect?
1) hallucinogens

2) depressants

3) stimulants

4) narcotics

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oopsydaisy oopsydaisy

31-08-2016

A depressant is the chemical substances that have a calming effect on people. They are also called sedatives or tranquilizers. The correct answer is 2.

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