What is a healthy dissolved oxygen level?
What is a healthy dissolved oxygen level? Healthy water should generally have dissolved oxygen concentrations above 6.5-8 mg/L and between about 80-120 %.
Can water have no oxygen?
Anoxic waters are areas of sea water, fresh water, or groundwater that are depleted of dissolved oxygen. The US Geological Survey defines anoxic groundwater as those with dissolved oxygen concentration of less than 0.5 milligrams per litre.
Can we breathe pure oxygen?
The gas that makes up most of the air we breathe is… NOT oxygen! Nitrogen makes up about 78% of the Earth’s atmosphere. Breathing an atmosphere of pure oxygen would damage the delicate tissues and blood vessels in our lungs, so it’s a good thing that most of our atmosphere is nitrogen.
Why is the water wet?
Water is wet, in the sense of being a liquid which flows easily, because its viscosity is low, which is because its molecules are rather loosely joined together.
