Which of the following is NOT a unit of energy? a)joules
b)celsius
c)calories
d)kilocalorie

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

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %

Pls ill give u brainliest which of the following is true about science? 1. political conditions are unable to influence it. 2. economic concerns may prevent it from solving problems.