With the advent of technology, researchers have been able to focus their attention on the messengers of the brain, neurotransmitters. researchers can introduce to alter the activity level of a neurotransmitter in order to analyze the effects of introducing a substance that decreases the activity of a neurotransmitter.

Rotenone is an insecticide that is toxic

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

Write a paragraph explaining how energy flows through an ecosystem using the following terms: energy pyramid, trophic level, producer, primary consumer, decomposer, sun, secondary consumer, and tertiary consumer. .