In our sheep example, we treated the situation as if sheep were foraging all by themselves in a field. of course, in real ecosystems, there are many different herbivores, some of which compete with one another for food. if both sheep and grasshoppers were feeding in a pasture, how do you think the grasshoppers would affect the sheep? choose the best answer. group of answer choices sheep consumption efficiency would be reduced sheep assimilation efficiency would be increased sheep production efficiency would be reduced the trophic efficiency of sheep would be increased

To save energy, the air supply to a 2000 ft office has been shut off overnight and the room temperature has dropped to 40°f. in the morning, the thermostat is reset to 70°f and warm air at 120 f begins to flov in at 200ft'/min. the air is well mixed within the room, and an equal mass flow of air at room temperature (changing with time) is withdrawn through a return duct. the air pressure is nearly 1 atm everywhere. ignoring heat transfer with the surroundings and kinetic and potential energy effects, estimate how long it takes for the room temperature to reach 70°f. plot the room temperature as a function of time.