QUICK, IF ANYONE CAN ANSWER CORRECTLY AND TRUTHFULLY I WILL GIVE 100 POINTS!
Q. My dad's fields aren't producing as many crops as they used to. Mark all the ones below that he could do to help the soybeans and alfalfa (to make hay) grow better.
A.Add more Nitrogen in the air around the plants.
B.Add more Nitrogen as a part of fertilizer.
C.Add nitrogen-fixing bacteria.
D.Add more rocks to the land.