Nails have iron, try eating one of those! The air is mostly Nitrogen, why do plants even need N2 in the soil?
It's basic fucking science that nutrients take different forms which can be absorbed differently.
Again: where do you think the cows get it, lol. Not from nails.
Nails have iron, try eating one of those! The air is mostly Nitrogen, why do plants even need N2 in the soil?
It's basic fucking science that nutrients take different forms which can be absorbed differently.
Again: where do you think the cows get it, lol. Not from nails.