What is the main cause of desertification worldwide? Use of chemical fertilizers
Overgrazing of livestock
Lack of irrigation
Monocrop agriculture
Planting of non-native crops

Nami conducts an investigation on plants. she places a grow light on a timer to give the plants different amounts of light to see if this would affect their growth. in this investigation, the amount of light is the .

What are the most populous and least areas of russia and why are some areas more heavily populated than others

What factors the economies of the muslim empires prosper?