which refers to scientific procedure undertaken by scientists to test a hypothesis and make a discovery or demonstrate a known fact?

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Which of the following is true about a carbonated soft drink? . the carbon dioxide is the solvent, and water is the solute.. the water is the solution, and carbon dioxide is the solvent.. the carbon dioxide is the solution, and the water is the solvent.. the water is the solvent, and the carbon dioxide is the solute.. .

At element makes up all organic compounds?