How could floodwater runoff from the land negatively impact the biodiversity of the great barrier reef lagoon ecosystem?

decrease acidity
decrease water cloudiness
increase nutrient concentration
increase salinity

Increase nutrient concentration

Explanation:

The declining quality of the coastal water of the Great Barrier Reef lagoon ecosystem is because of the surface runoff materials coming from agricultural field, industrial discharge, and use of the urban land. These will increase the amount of nutrients in the lagoon ecosystems which will result in eutrophication. Also the salinity levels are enhanced by the climatic changes.

it takes hundreds of years to become stable.

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