The early stage of protein purification often uses a procedure known as "salting out". this is typically done by treating the protein solution with

Ammonium sulfate

Explanation:

Ammonium sulfate is the first fertilizer that is used in crops. Now, these days it is less required but still used there where nitrogen and sulfate are necessary for crops. It is produced before around one fifty years.

It is produced during manufacturing the goal gas from the industrialization. But now these days there are different ways to produce by heating sulfuric acid with ammonia and get ammonium sulfate. As we know it is very useful in agriculture.

When it mixes with soil, the ammonium and sulfate very soon dissolve with its particle and work in the best way for fertilization of crops. It is also used by many companies in making bread dough. It has many uses in an organization like fire extinguisher powder, wood pulp and pharmaceutical companies.

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer

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