Also, no, plant food is nitrates and phosphates, CO2 is just what plants 'breath'.

Plant food, if it's anything, is sunlight.

But almost all of what you see when you look at a tree is made of water and CO2.

Water is also vital to all life. Doesn't mean you can't drown in it or that you'll want too much of it in your basement.

Plants need water, too, but that doesn’t mean they like tsunamis.