Question

Select the correct answer from each drop-down menu. Humans use many chemical substances for farming that consequently affect biodiversity. These compounds, which are rich in nitrogen and phosphorus, are used to fertilize crops. Excessive use of these compounds causes , which leads to in bodies of water.

Answer 1

Excessive use of Nitrogen and Phosphorous which is used in crops causes soil erosion. It leads to algal blooms in waterways, It affects the carbon cycle, and also contributes to primary succession.

Answer 2

Eutrophication occurs due to excessive use of these compounds, which can lead to having dead zones in bodies of water. 

Dead zones refers to areas with decreased levels of oxygen in the bodies of water caused by eutrophication and other factors. These affect the marine life negatively as fishes are also dependent on oxygen. 

Eutrophication is defined as the presence of excess minerals in the water, which causes dense growth of plants and leads to depletion of oxygen that make the animals in the water to die.