33th Error Para

We were a British colony, and the British government at that time started to clear cut the indigenous forests in our forested mountains because they wanted to establish commercial plantations of exotic species of trees such as the pines from the northern hemisphere and the eucalyptus from Australia. (22) These trees are very nicer, they grow tall, and they grow very fast, but as they grow they destroy all the local biological diversity. All the flora and fauna disappeared. (23) So although we were getting commercial timber with the growing timber industry, we also destroyed our local flora and fauna. (24) As a result, these forests, which were the water towers, are no longer able to contain the water, so when the rains fell the water ran downstream and ended up in the lakes and oceans instead of going down into the underground reservoir so that it could come back to us in the form of rivers. (25) One thing we noted is that not only did the rain patterns change, became less, the rivers started drying up. (26) We lose our local biological diversity. So that's a lot of damage to our environment.

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Correct (22): These trees are very nice; they grow tall, and they grow very fast, but as they grow, they destroy all the local biological diversity. All the flora and fauna disappear.
Explanation: The sentence describes what happens generally, so the verb should be in simple present (“disappear”), not past (“disappeared”).

Correct (23): So although we were getting commercial timber for the growing timber industry, we also destroyed our local flora and fauna.
Explanation: The sentence is in past tense (“were getting”), so the verb must also be in past tense (“destroyed”).

Correct (24): As a result, these forests, which were the water towers, were no longer able to contain the water. So when the rains fell, the water ran downstream and ended up in the lakes and oceans instead of going down into the underground reservoir so that it could come back to us in the form of rivers.
Explanation: The sentence is already correct. No grammatical changes are needed.

Correct (25): One thing we noted is that not only did the rain patterns change and become less, but also the rivers started drying up.
Explanation: After “did,” we must use the base form of the verb. “Become” is correct; “became” cannot be used after “did.”

Correct (26): We lost our local biological diversity. So that is a lot of damage to our environment.
Explanation: “That is” is correct because it expresses a present judgment about the situation. “That's” (short form) is also acceptable, but “that’s” must be written as “that is” for formal writing.

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