Answer:
Exploitative competition is an indirect form of competition where there is a limited resource controlling the situation. An example would be with trees. The older, taller trees create a canopy effectively absorbing the available light. Thus, the younger, smaller trees do not have access to that resource and are less likely to survive.
Interference competition is a direct form of competition where an organism actively interferes with another organism's ability to obtain it's resource. Although there may be plenty of the resource, it's the action of another organism preventing them from getting it. An example would be with American Bullfrogs. They will eat most anything, including younger, smaller bullfrogs. That aggressive behavior takes out competition for the bigger frog's resources.