Mark is a heroin addict who always shoots heroin in his apartment. One day Mark goes to a different city, injects heroin in his hotel room and overdoses. Why did Mark overdose?

What is an important step to prove something is valid or not? determining the reliability observing research testing

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

How are people today protected from poop 50 points