D) increasing the number of fish that live in the river.
Pollution will lead to the death of fish, decreasing their numbers.
Hope that helps!
Answer:
b) I shall be speaking on the joys of volunteerism
Explanation:
The best way to atract volunteerism would be to explain to potential volunteers that the mere action of helping other will give them joy. I think this is the best because it promises joy for volunteers, which is something so simple and, at the same time, so attractive.
The rest of the options a, c and d are about receiving something in return for volunteering.
<span> the name for this device used for investigating learning in animals is called a: Skinner box
Skinner box is a projectional environment which could be controlled by the researcher to fulfill a certain condition.
The skinner boxes are usually made from transparent materials, which allow the researchers a full access to whatever happened inside the box.</span>
Answer: Negative Reinforcement
Explanation: Negative reinforcement is an efficient method that can be used to help teach desired behaviors by removing something uncomfortable in response to a stimulus which overtime, that target desired behavior increases with the knowledge that the unpleasant thing will be taken away.
for example when a mother switches off the TV when a son hasn't done his homework, and is watching cartoon, this will increase the chances that the son over time will do his homework before watching TV as he understands his mother would put off the TV if he doesn't .
Also, putting on a sweater when a person feels it is cold would make him or she feel warmer which will lead to an increase in the probability that response will be repeated in the future.
