Carnivores (only eat meat) eat herbivores (only eat plants) to survive, Herbivores eat plant to survive. So with out the main plant species to eat eventually herbivores will run out of food and die, when that happen the Carnivores will run out of food and die. Us humans are both herbivores and carnivores so if this were to happen the ending result would be extinction for all life forms Plants, Animals and Humans.
D, how hard the students try on the SAT seems the most reasonable.
They are example of organelles
Since the Action AA batteries last 4 times as long as Bonus AA ones, even though they cost four times as much for convenience in only having to change them once compared to 4 times for the same length of time, this is a good reason to buy them. This is especially the case if the batteries are being used in a remote place such as by a geologist with a GPS out in the bush then he/she doesn't have to worry about them running down so much.
