Question
According to the passage, which of the following is a factor that is threatening the survival of coral reef communities?
Answer: Option D
:
D
Option D
The author says that human activities such as agriculture, slash-and-burn land clearing, sewage disposal and manufacturing create waste by-products and increase nutrient loads in these waters thereby threatening reef communities sensitive to subtle changes in nutrient input to their waters. Option (D) is the obvious choice
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:
D
Option D
The author says that human activities such as agriculture, slash-and-burn land clearing, sewage disposal and manufacturing create waste by-products and increase nutrient loads in these waters thereby threatening reef communities sensitive to subtle changes in nutrient input to their waters. Option (D) is the obvious choice
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