The species richness of a community refers to the a) number of food chains. b) number of different species. c) energy content of all species. d) relative numbers of individuals in each species. e) total number of all organisms.

The species richness of a community refers to the number of different species. B)

there are 35 white marbles

step-by-step explanation:

y- yellow marbles

4y + 5 = 45

subtract 5 from both sides

4y = 40

divide for from both sides

y = 10

plug in 10 to get 40 yellow marbles then subtract by 5 to get 35 marbles

thus there are only 10 yellow marbles