Explanation:
Here r the things thet upset the ecological balance
1 Deforestation
2Over population
3 Burning of fossil fuel
4 pollution
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The First Barbary War (1801–1805), also known as the Tripolitan War or the Barbary Coast War, was the first of the two wars fought between the United States and the Northwest African Berber Muslim states, known collectively as the Barbary States.
I believe it would be Dickens and Twain !! Both were social critics.
Answer: Elaborative and Maintenance.
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Elaborative rehearsal results in a more lasting memory and promotes the transfer of information to long-term memory, as compared to maintenance reversal.