What are some ways in which carbon can get into the atmosphere?

when organisms respire or decompose, volcanoes erupt, etc. Carbon dioxide is also added to the atmosphere through human activities.

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