Which of the following organs aids in swimming for fish? a. fins c. gills b. lungs d. scales

Explain how unhealthful weight loss or weight gain can lead to further weight loss or weight gain.

Which of the following represents the results of a review of well-controlled studies of vitamin c supplementation on the resistance to, and recovery from, colds? there was a reduction in the duration of colds by 50% on the average. there was a slight effect on reducing the duration and severity of colds for people taking vitamin c supplements. there was a significant reduction in the duration of colds in people who consumed at least one gram a day. there was a significant reduction in the number of colds only in people who consumed > three grams per day.

Which of these is a controllable risk fator for disease