Answer:
C
Explanation:
Reinforcement adds SOMETHING/ INCREASE the situation in order to INCREASE the target behavior, while punishment REMOVES SOMETHING/ DECREASE the situation in order DECREASE the target behavior.
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World human population reached one billion
Answer:
Areas with high population density in the daytime tend to have more public service facilities. The higher the day-time population density, the more likely public service facilities are to aggregate
Explanation:
pls mark brainliist
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