How does population density differ from population size? a. population size takes all organisms into account, while population density only takes specific age groups of the population into account. b. population size is the total number of organisms, while population density is the total number of organisms within a given area. c. population size is the total number of organisms within a given area, while population density is the total number of organisms of a specific age. d. population size is the total number of organisms of all species, while population density is the total number of orga

b. Population size is the total number of organisms, while population density is the total number of organisms within a given area.

Explanation:

Population size and population density are the two demographic parameters to count the health and strength of the population.

The population size can be define as the total number of individuals in the population of species. It is not indicative of the area and unit time to which population is associated with.

But the population density can be define as the total number of individuals or members living in a particular area in a particular time period.

the answers are a and c

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.