What would be the best method of land management to use to improve the stability his grassland ecosystem so that the rancher does not need to buy hay?

c

explanation: because you need to reduce the pollution on land,the exhaust fumes will stop,and stop it in water,the oil that is in the oceanharms the fish   sorry if you   have been waiting long  

answer; knowledge,reason,and judgement;

answer; ha,ha,ha, corn on the cop;