Study the equation for heat transfer. what happens when the value for tfinal is higher than the value for tinitial? is heating or cooling taking place? what if tinitial is higher than tfinal?

Heat transfer means heat energy is transferred from on object or a body to another. This causes change in many factors, and temperature is one of such factors. If the temperature increases, it means heating is taking place and if temperature decreases it means cooling is taking place.

If Tfinal is more than Tinitial, it means the object has gained some amount of heat energy. Therefore, heating is taking place.

If Tfinal is less that Tinitial, it means the object has lost some heat energy and cooling is taking place.

no they are not always accurate because they can not give you a specific fortune reading they can not tell you exactly what’s gunna happen

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.