I don’t understand the question help

Vertebrates have this type of circulatory system: wut i it owo

What are possible signs and symptoms of drug addiction? check all that apply. declining physical appearance and health failing to meet family, school, or work obligations needing less and less of a drug to get the same effect using drugs when there is no health benefit failing in attempts to stop using a drug stealing to get drugs

Who is considered the father of modern behavioralism? a fred b jung simmer pavlov