An official language is one which has designated as the main language for business, education, government and administrative affairs.
Explanation:
The official language of a country is not always the most spoken language. Many countries also have multiple official languages.
In the case of Canada, English and French both have official status even though English has more speakers than French at a national level.
An example of a country where a colonial language is used by the government but is not understood by a majority of the population is Senegal. French is the administrative language, but only around one-fifth of Senegalese understand French.
The benefits of Desalination. One of the benefits is that we able to use the earth's abundant salt water supply. Meaning that the salt water could be purified of salt, and distributed to the places that need it. One of the drawbacks is that not much water is left after the process.