Answer:
traffic , pollution, lack of space.
Explanation:
Answer:
D. the American Revolution
Explanation:
Liza's gambling is being reinforced based on a
"variable-ratio schedule".
A variable-ratio schedule refers to a schedule of reinforcement where a reaction is strengthened after an unusual number of reactions. This timetable makes an unfaltering, high rate of reacting. Betting, gambling and lottery amusements are great cases of a reward in light of a variable ratio schedule.