Nonpoint-source pollution is
a. not a serious problem in today’s oceans. b.difficult to trace because there’s so little of it. c.difficult to trace because it comes from different sources. d.easy to trace because it comes from one source.

stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.