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Sagot :
Answer:
1. i think A
2. i think C
3. i think C
4. i think A
Explanation:
Im not to sure on these but for the 1st question construction has definetly killed some plants but im pretty sure some have adapted. 2nd question i think that since the cities expanded they would have to change food sources. 3rd question air pollution would most likely have an affect on oxygen levels. and 4th question settlers arriving were good and bad
(im not too sure on these answers but i think they might be close sorry.)
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