What is the active psychoactive ingredient in marijuana?

Cary knows that daughters can also be granddaughters at the same time. This best illustrates:

A) abstract thinking. B) hierarchical classification. C) understanding of class inclusion relationships. D) seriation.

Marylou is making her famous chili. Instead of measuring the amount of chopped peppers to add, she knows that a handful is "usually about right." This illustrates the use of a(n):

a. heuristic. b. prototype. c. algorithm. d. mental image.