How does a catalyst influence a chemical reaction?

A catalyst is a substance used for speeding up the chemical reaction. In addition, it is never consumed in a reaction and is required in a small quantity.

A catalyst increases the rate of chemical reaction by decreasing its activation energy.

Common types of catalysts are enzymes, acid-base catalyst etc.

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.