Explain why dietary guidelines for grains changed in 2005? ANSWER IS: Americans eat 41 percent more grains than they did in 1970; this is the result of eating snacks made from grain products such as rice, corn, oat, and barley. Most of these grains are refined and therefore not as healthy as whole grains. The 2005 Dietary Guidelines changed to compensate for this by decreasing consumption levels to six ounces and recommending that half of what someone eats comes from whole grains.

Carissa, age 14, having trouble keeping up with all her assignments and when they are due. in addition to that, she struggles to balance school work, chores at home, social life, and playing volleyball. question 1 options: underdeveloped frontal lobe underdeveloped amygdala underdeveloped cerebellum underdeveloped corpus callosum question 2 (5 points) teens are not as adept at interpreting facial expressions and emotions as adults. what is the reason for this? question 2 options: teens use the frontal lobe more than adults which interferes with the use of the other areas of the brain like the amygdala. teens use the amygdala and adults use the frontal lobe to differentiate between similar facial expressions and emotions. adults have a thicker corpus callosum than teens which allows them to use both sides of their brain more efficiently. the lymbic regions of the brain are used more in adulthood than adolescence. question 3 (5 points) the human brain's development is like pruning a tree. as one grows older the unused connections in the brain are removed to make room for new growth. question 3 options: true false question 4 (5 points) michael, age 16, driving his car fast down a curvy road without his headlights on. question 4 options: underdeveloped amygdala underdeveloped cerebellum underdeveloped frontal lobe underdeveloped corpus callosum

Why would a smoker tend to inhale more deeply and smoke more cigarettes when he or she switches to low nicotine cigarettes

Which of the following choices is the most important to do before starting an exercise program? a. see your doctor b. talk to your friends for advice c. lift some weights d. measure your body fat