State one reason why a molecule may not be able to pass into or out of a cell.

Describe some of the common health conditions associated with air pollution.

Brad was almost hit by a speeding truck as he crossed the street. his heart began to race, and he felt extremely afraid as he jumped out of the way in just enough time to avoid the truck. a psychologist who supports the theory of emotion would claim that based on the arousal brad experienced, he appraised the situation and then labeled his racing heart as fear. a. james-lange b. cannon-bard c. schachter two-factor d. evolutionary

Ineed an essay 1200words about obezity ,introduction,main causes,conclusion