Puzzling clusters of microscopic plants in the ocean are likely caused by giant, swirling circular currents, scientists now reveal, providing a new view of how life travels around the globe. About half of the Earth's oxygen is generated by tiny, single-celled plants known as phytoplankton that live in the planet's oceans, rivers and lakes.
If you consume 50 percent of your energy intake from carbs and 20 percent from protein, aim to eat 30 percent of your calories from fat, which is equivalent to 40 grams when following a 1,200-calorie weight loss diet and 53 grams of fat when consuming 1,600 calories per day.any well-balanced, reduced-calorie diets contain about 50 percent of calories from carbohydrates, which is equivalent to 150 grams when consuming a 1,200-calorie diet, and 200 grams of carbs when following a 1,600-calorie weight loss plan.
Fat. Fat should constitute 20 to 35 percent of your total caloric intake. The average American man takes in 93 grams of fat per day and the average woman takes in 66 grams of fat a day.rotein. Americans eat more protein than they need. The IOM advises women to get about 46 grams of protein a day and for men to get 56 grams of protein daily, but the average American woman takes in 68 grams of protein daily, while a man takes in nearly 100 grams of protein a day.