What percentage of teenagers was reported to use drugs on a weekly basis?

Which description best defines the nervous system and its two main branches? a: the message center of the body, split into the autonomic nervous system and the somatic nervous system b: the control panel of the body, split into the central nervous system and the exterior nervous system c: the message center of the body, split into the central nervous system and the peripheral nervous system d: the control panel of the body, split into the brain and the spinal cord

*psych* 1. discuss the major categories of abnormal behaviors as classified by the diagnostic and statistical manual (dsm) 2. identify the characteristics of the major categories of abnormal behavior.

Why is important to learn about the environment?