When studying motivated behavior, including eating, rats can be used to predict human behavior because the in a rat's brain is similar to that of a human.

Lateral hypothalamus and ventromedial hypothalamus

Explanation:

The studies on human behaviour can be associated with the studies on the rats as they both belong to the same family that is mammals.

The studies on the human eating behaviour like the part of the brain involved in the stimulation of hunger when studied in the rats were found that the same art of the brain that is the hypothalamus, both the ventromedial and the lateral hypothalamus is involved in the production of the hunger in the rats.  

Thus, Lateral hypothalamus and ventromedial hypothalamus is correct.

significant amounts of nitrogen oxides, carbon monoxide, and other pollution

explanation:

passenger vehicles are a major pollution contributor, producing significant amounts of nitrogen oxides, carbon monoxide, and other pollution. in 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air.

they are known to reach a speed of 21 miles per hour