Obtaining energy & Removing waste

​A Calorie is the amount of energy it takes to raise the temperature of 1 kg of water by 1°C. nutrient are parts of food that used by the body to grow and survive carbohydrates, proteins, fats, vitamins, minerals, Roughage and water.

​Digestion works by moving food through the GI tract. Digestion begins in the mouth with chewing and ends in the small intestine. As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules

​The excretory system collects and eliminates wastes from the body and regulates the level of fluid in the body Villi are fold of small intestine are covered with fingerlike projection.

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The small intestine is about 20 feet long and about an inch in diameter. Its absorb most of the nutrients from what we eat and drink. The large intestine is about 5 feet long and about 3 inches in diameter. The colon absorbs water from wastes, creating stool

is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.​

​ I hope you Enjoy <3