A country with a total fertility rate that falls below 1.5 children per couple for a prolonged period of time will eventually experience all of the following except A. a sharp rise in proportion of older people

B. increasing number of working taxpayers

C. an inverted age structure pyramid

D. increasing demand on social security funds

her next move would be to use agarose gel electrophoresis to separate the dna molecules of varying length and create a dna fingerprint.

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.