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Which of the following is a human activity that can cause a freshwater resource to become hypoxic?

Use of fertilizers on farms and yards
Increased death of aquatic organisms
Decrease in algae and microorganisms
Using more plastics and paper products

Respuesta :

Use of fertilisers on farms and yards

Fertilisers are made up on Nitrogen, Phosphorus and Potassium

There are essential for plant growth
However having too much of these nutrients is called eutrophication and can result in algae bloom.

The algae growth then reduces the oxygen in the water , causing hypoxia.

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