Which of the following birds came out of the paleocene epoch? a) ducks b) hawks c) cranes d) all of the above

d) all of the above

Explanation:

Paleocene Epoch is the major division of rocks and time interval between 66 million and 56 million years ago.  It is the first epoch of the Paleocene period in the modern Cenozoic era. Its beginning and end are well identified but exact dates cannot be fixed. During Paleocene Epoch, the birds start to diversify into new niches. The birds came out of this epoch consists of perching birds such as cranes, hawks, ducks, pelicans, owls, herons. Therefore, answer is the option d) all of the above.

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.