How are ecosystems named?
a. by the climate it is associated with
b. by the plants that inhabit the ecosystem
c. by the surrounding city
d. by the surrounding country

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

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it