External validity refers to the ability to generalize results from a research study sample to a larger population. a. True
b. False

Diagram the passage of food through the digestive system. label the organs involved in digestion and absorption and identify the sites where carbohydrates, proteins, and fats are digested.

Hey! my question is: how many calories does it take to burn off and loose 1 if would be gladly appreciated if some one me in this! : )

Andrew feels good about himself. he doesn't know exactly why he is so happy, but every day he looks forward to his schoolwork and chores. "i play a game," he says. "i make a list of everything i have to get done, and then i try to finish it all before a certain time. for some reason, i feel great when i beat my time." based on this information, why is andrew happy? he gets a proper amount of sleep he eats healthy meals he has a strong family support group he regularly meets his own goals