Which of the following is true about sea water? 1. Sea water is pure water (H20). 2. The salinity of sea water is negligible. 3. The chemical composition of sea water has great spatial variability. 4. Sea water is a solution.

4. Sea water is a solution.

Explanation:

The solution is a type of homogenous mixture in which the solute is dissolved homogeneously in the water. Salt is dissolved in the seawater so the seawater is a type of solution. The salinity of the seawater is about 3.5 % that means about 35 grams of salts are dissolved per kilogram of the water. There are many ions or salts that are present in the seawater such as bicarbonate, sodium ins, chloride ions and some other.

In meteorology, a  cloud  is an aerosol consisting of a visible mass of minute liquid droplets, frozen crystals, or other particles suspended in the atmosphere of a planetary body. nephology is the science of  clouds, which is undertaken in the  cloud  physics branch of meteorology.cirrus clouds  usually describe clouds high in the atmosphere that can include wispy clouds, typically with ice crystals. variations include cirrus, cirrocumulus and cirrostratus as defined by the cloud's position in the atmosphere.layered stratus clouds  have both flat tops and bases, and can appear as if they take up the whole sky, stretching from horizon to horizon. other combinations and variations include stratus, stratocumulus, nimbostratus and altostratus.cumulus clouds  often pile up in multiple layers of the atmosphere, representing clouds that develop vertically. cumulus clouds often look like pillars with anvil-type tops or columns of clouds stacked vertically. variations include cumulus, cumulus-congestus, cumulonimbus and altocumulus.