You know, all our fuel would be renewable and leave a negative carbon footprint if we grew hemp biodiesel. But that's illegal.
Except it wouldn't be, because when a plant grows, it pulls stuff out of the ground, and when it dies and decomposes, it puts stuff back into the ground, but if you remove that plant, you basically just end up pulling stuff out of the ground untill there is nothing to pull. We would essentially switch from oil based energy to fertilizer based energy.
year if you remove that plant, you basically just end up pulling stuff out of the ground. this is true.