The modern atomic model is also sometimes called the model. a. traffic jam in a busy intersection b. a swarm of bees around a bee hive c. multiple outfielders running to catch the pop fly in baseball d. sprinters going around a track

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

age range would be the answer

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.