In biology, a mutation is a permanent change of the nucleotide sequence of the genome of an organism, virus, or extrachromosomal DNA or other genetic elements.
Salinity is the saltiness or dissolved salt content of a body of water (see also soil salinity).onceptually the salinity is the quantity of dissolved salt content of the water. Salts are compounds like sodium chloride, magnesium sulfate, potassium nitrate, and sodium bicarbonate which dissolve into ions.
Ocean Salinity. As mentioned before 96.5% of the ocean is water. The other 3.5% is salinity. Salinity is the total amount of dissolved solids (in grams) in 1000 grams (1 kg) of water, and is described as parts per thousand.These solids form ions (charged molecules) because of interactions between lattices and water molecules.he other 3.5% is salinity. Salinity is the total amount of dissolved solids (in grams) in 1000 grams (1 kg) of water, and is described as parts per thousand.