Well, the COD determines/indicates the amount of oxygen which is needed for oxidation of all organic substances in water in mg/l or g/m^3.
About 71 percent of the Earth's surface is water-covered, and the oceans hold about 96.5 percent of all Earth's water. Water also exists in the air as water vapor, in rivers and lakes, in icecaps and glaciers, in the ground as soil moisture and in aquifers, and even in you and your dog. Water is never sitting still.
Answer:
The correct answer is A. The portion of the brain responsible for conscious thought, reasoning, and abstract mental functions is the cerebrum.
Explanation:
The cerebrum is part of the central nervous system and comprise most of the human brain. The cerebrum processes impulses from sensory nerve cells and regulates voluntary movement. It is also the place where cognitive and emotional processes (including logical reasoning, planning, memory, emotion) take place.
