Answer:
polluted drinking water and disease
Explanation:
Desertification is defined as the land degradation in drylands which loss its ability of biological productivity due to human intervention and natural processes and the areas loss their fertility.
The major concern of desertification is polluted drinking water and disease because water and health are the primary need of a person.
Due to desertification, the water quality in the area become worse as desertification affect plant life and without any plant life the water get polluted for drinking and other daily works as well.
Desertification also increases risks of diseases and degrade one's heath because of the environmental condition. The food supply is very low that causes malnutrition, lack of clean water and poor hygiene results into several diseases and air pollutant such as dust causes respiratory diseases.
Hence, the correct answer is "polluted drinking water and disease".
