Wars and conflicts with neighboring European nations (such as France).
The correct answer is: "the demand curve will shift to the right".
Households are the economic agents whose will defines the demand curve. This curve represents combinations of prices and amounts demanded by them. In the case, the income has increased for all households within a market, the demand curve shifts right, which means that quantity component of all combinations has increased, and that at the same price more amount of the good is demanded by the consumers.
Such a shift is represented in the graph attached.
Enzymes
a catalyst is a substance that increases the rate of a chemical reaction but is not consumed by the reaction. Enyzymes are <span>Biological catalysts that increase the rate of a chemical reaction but is not consumed by the reaction. There are variosu types of enzymes depending on the reaction process. Usually enzymes are named after the reaction they catalyzed.</span>
I think this is what your looking for