Answer:
Low - The generation of nitrates (NO 3-) requires oxygen, so the oxygen levels will be low
Explanation:
Nitrates are formed when the ammonia react with oxygen present in water. The oxygen which react with ammonia is not the oxygen of water molecule, it is the dissolved oxygen. This oxygen is used by aquatic animals for breathing. If nitrates are formed so the concentration of dissolved oxygen will be lowered which causes suffocation and bad impact on marine organisms and the whole ecosystem will be disturbed.
The theory of continental drift was given a scientific status during the:
1960's.
The answer is Liver disease
Fossils best demonstrate what ancient organisms may have looked like when they lived long ago. Without fossils, knowing such things would be nearly impossible.
Answer: belong to the Kingdom Protista. ... This is because Euglena just like plants can make their own foods through chloroplast while paramecium just like animals cannot make own food
Explanation: