Background Paragraph: Trees can benefit fauna. The most common examples are silvopasture where cattle, goats, or sheep browse on grasses grown under trees. In hot climates, the animals are less stressed and put on weight faster when grazing in a cooler, shaded environment. The leaves of trees or shrubs can also serve as fodder. 
Story: Two farmers live side by side and both raise cattle in separate fields. The area they live in is rather hot. Farmer A's grazing area is wide and open with no trees around. Farmer B has a lot of trees in their grazing area.
Given farmer A decides to plant some trees in his grazing area, will his cattle be more or less likely to put on weight faster? Given farmer B decides to cut down all of the trees in his grazing area, will his cattle likely be more or less stressed? Which farmers cattle are likely more stressed, Farmer A or B? Which farmers cattle likely put on weight faster, farmer A or B?