The word count doesn’t need to be too many, or it’s up to you. MLA format 1. Why

The word count doesn’t need to be too many, or it’s up to you. MLA format
1. Why are nitrogen and phosphorus limited for the algal growth in water?
2. If nitrogen concentration is relatively low compared to phosphorus, what kind of phytoplankton becomes dominant?
3. Why does BOD indicate the level of water quality?
4. What is the major primary producer in deep lakes?
5. Why do oxygen and carbon dioxide distributions have opposite trends in deep lakes?
6. What kind of artificial process makes the summer time overgrowth of cyanobacteria in deep lakes?
7. How does channel morphology of rivers change from upstream to downstream?
8. What is the mechanism of self-purification in the river channel?
9. How does particulate organic matter change from upstream to downstream? What kind of organisms use them?