1. chain reaction the splitting of a nucleus into two smaller nuclei whose combined mass is less than that of the original nucleus 2. critical mass the joining of two small nuclei to form one nucleus with a larger mass than the combined mass of the original nuclei 3. fission a self-sustaining reaction that creates an on-going series of reactions 4. fusion the amount of fissionable material required to keep a reaction goin

Select the correct answer from each drop-down menu proteins are

Why are common names a problem for scientist?

Read the scenario below and answer the question that follows. hallie is reading a novel in the library when susan, her best friend, slumps down in a chair next to her. susan doesn't say anything, but hallie knows that susan is upset because she is slumping in her seat and rolling her eyes. a psychologist would explain that hallie is interpreting her friend's emotion based on a. the behavioral component of emotion b. her friend's ability to regulate emotion c. the verbal component of emotion d. the physiological component of emotion select the best answer from the choices provided a b c d