34. effects of chronic use include lung cancer, memory impairment, decreased blood flow to the brain, and reduced oxygen availability in all regions of the body. a. heroin b. cocaine c. marijuana d. alcohol

true

explanation:

agreeableness is a personality trait manifesting itself in individual behavioral characteristics that are perceived as kind, sympathetic, cooperative, warm, and considerate.

chronological thinking is an indispensable tool to structure a historical narrative and to give meaning to a sequence of events. the final section presents the results of a survey to test the chronological thinking of lower secondary school students carried out by the educational research institute.