Use revise in the present progressive tense? What does that mean?

revising

Explanation:

revise is a first form of a verb. To use it in present progressive/ continuous tense, only thing required is add "ing" to it, hence answer is revising

the unsaturated fatty acid is a fat consist of one or more double bond in the fatty acid chain. if it contains one double bond then called as monounsaturated fatty acid however if, it contains more than one bonds called as a polyunsaturated fatty acid. true fatty acids are called unsaturated fatty acids as it reduces the risk of high blood cholesterol and good for health.