Answer: Hunt and kill other organisms
Explanation:
A predator is a living organism usually animal, that is capable of hunting, killing and feeding on other organisms. The hunted animal is called a prey.
For example:
Lions, tigers, leopards all hunt for antelopes using their good eyesight to find them, their powerful claws to kill and their jaws to feed on its flesh.
Thus, lions, tigers and leopards are predators while antelopes are preys
Given that a blowfly starts its lifecycle only if there are appropriate conditions met, one of which is suitable temperature, the correct answers as to what can impact the timing of the blowfly lifecycle is the air temperature.
I don't see how humans will impact when this fly is going to be born, so A and C are incorrect. Leaves also doesn't really affect blowflies, which is why D is incorrect as well.
Sea stars (or starfish) feed off the oyster beds. If the oyster beds were destroyed it would deplete the major food source of the sea stars and they would begin to diminish.