In two or three sentences, explain why it can be difficult for people to practice delayed gratification

Which of the following choices are the fat soluble vitamin? a) c b) b6 c) d d) calcium

Active immunity refers to: a. the defenses people are born with. b. temporary immunity granted from another source. c. immunity gained through immunization and exposure to diseases. d. natural immunities that protect humans from other animal diseases

Is psychology a science? use evidence form the article to explain you answer.