1. what are drugs?
- a substance that helps with medical needs
- substances that change chemical reactions in the body
- a substance that altetrs how you think
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Other questions in this quiz
2. when did basic life forms start to appear on the earth
- 10 million years ago
- 3.5 billion years ago
- 1 billion years ago
- 1 million years ago
3. thalidomide caused what type of problems?
- weakens bones
- unexpected problems with babys
- mental breakdown
4. how long after darwins theory did it take to understand
- 50 years
- 400 years
- 20 years
- 100 years
5. what evidence supports this?
- acient books
- animals shape