Drag each agricultural practice to show whether it impacts the quality or quantity of water. each item may be used more than once.

Pesticide is quality and irrigation and grazing is quantity

Explanation:

Water quality: Pesticide, grazing

Water quantity: Irrigation

Explanation:

The quality of water in streams and rivers can be impacted with pesticide and grazing by livestock in the adjoining vegetation.

Pesticides are chemicals used to control pests but their presence in water bodies can be harmful to the aquatic organisms, and to humans that make use of such water for domestic purpose.

Grazing involves feeding of livestock with above ground grass or herb covers in order to raise meat, milk or other relevant material for the use of man. Removal of vegetation cover makes the soil to be susceptible to erosion. Erosion of soil from adjoining stream's vegetation results in mobilization of debris and sediments into the water, thereby increasing the turbidity and particulate matter in the water.

In some cases, livestock droppings from grazing animals also get washed along into waters during erosion. These droppings are rich in nutrients such as nitrogen and phosphorus which are capable of causing eutrophication and loss in quality of water.

While pesticides and grazing can impact water quality, irrigation directly impacts water quantity. Irrigation involves artificial supply of water to crops for agricultural purpose. There are different methods of irrigation with each having different impacts on the level of water in the concerned water bodies.