Warmup: A = {A, C, D, E, F, G, Q, Z, R, M} B = {43, 84, 94} C = {1, 2, 3, 5, 6, 7, 8, 9, 10} The filing system in an office requires each file to have an alphanumeric code name of the form abc. A, B and C are the sets from which a, b, and c must be chosen. How many possible code names are there?

Which scenario describes intraspecific, indirect competition? a. a peacock defends its territory against another peacock. b. lions and hyenas compete for the same prey animals. c. a male black bear eats fish in an area of a lake, so other black bears can’t. d. different species of birds fight over spilled popcorn on the ground.