Something you want to set, and Accomplish after a period of time
<span>Answer to your quesiton is C.Stimulant. stimulants increase activity of the body, they can be pleasurable and invigorating, also they can produce physcological affects on the sympathetic nervous system. many drugs are stimulants. so answer to your question is Nicotine is a stimulant that speeds up neural activity by increasing the body's production of epinephrine</span>
The answers are letters B and D. They are not soluble in water and the hydrogen-oxygen ratio is different. Good luck!