Salt and harmful (and disgusting) microorganisms.
usable water
Underwater, animals have special adaptations to extract oxygen from sea water. Fish, for example, use their gills to convert water into usable oxygen.
In order to make sea water usable it would need to be boiled. This would cause the salt to evaporate, so it could be consumed.
1% of water is usable in this case .Since only 3% of water is usable as fresh water, 2% is unavailable in frozen form leaving approximately 1% of the earth's water usable.
to evaporate the salt solution therefore getting a clearer usable water!
get the minerals,nutrients and other healthy nutrients from the unusable to make it usable water..
get the minerals,nutrients and other healthy nutrients from the unusable to make it usable water..
Any freshwater on Earth is usable
unfrozen fresh water
Yes
Friction
from friction