Kieran is attempting to condition a parrot to greet him when he enters the room. he repeatedly pairs his entry to the room with a treat for the parrot. kieran can say that has occurred as soon as the parrot greets him in response to his entry.

What is point source pollution of an aquatic ecosystem? a) pollution of freshwater sources b) pollution from many sources that combine into one c) pollution that occurs over a wide area; water that runs off from fields, parking lots, and other land surfaces d) pollution that can easily be identified with a single discharge source, such as an open pipe which drains into a body of water