A farmer growing corn must water the Crop regularly due to

If we perceive our body as too fat even though our body is not we might diet until we think we aren't fat and if we perceive our body as too thin we might binge eat until we think we are average weight ( not too thin and not too fat )

Nechropagous insects, otherwise a.b means they eat both meat and plantc means they only eat meatd is that their native to that area(correct one) a is feeding off of remains.