Nicotine is... 1)a substance that is in tobacco products because it's in the tobacco leaves, but doesn't have a physical
impact.

2)a depressant that can make you feel like you have less energy.

3)a substance that is in tobacco products like the vapor from e-cigarettes or vape pens.

4)a substance that is non-toxic.

Which description best defines the nervous system and its two main branches? a: the message center of the body, split into the autonomic nervous system and the somatic nervous system b: the control panel of the body, split into the central nervous system and the exterior nervous system c: the message center of the body, split into the central nervous system and the peripheral nervous system d: the control panel of the body, split into the brain and the spinal cord

If you are having a hard time lifting something, you should arch your back. a. true b. false

Which action is most likely to contribute to a positive self-image?