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NewReddit101 t1_j1tev6v wrote

“You can't just grow plants without fertilizer.”

Lol plants couldn’t grow before the industrial revolution; they just didn’t exist


unskilledplay t1_j1tl0gu wrote

There isn't enough arable land to feed 8 billion people without fertilizer.

In the late 1800s scientists were modeling that after around 2 billion people population growth would have to stop because there wouldn't be any way to feed everyone. In the early 20th century a bunch of methods to mass produce fertilizer appeared. It was one of the biggest events in human history.

Today you can do the math and determine exactly how many calories a shortage of X tons of fertilizer will cause to global food production.