Study life

 Cartilage Most of the skeleton consists of hard bones. However, at some places in the skeleton there is a material ich is not as hard as bones and which can be bent. It is called cartilage. So, we can now say that though most of the skeleton is made of bones but it has some cartilage too Cartilage is a firm but flexible material d at some places in the skeleton Cartilage is much softer than bone. Cartilage can be bent without haking. In fact, cartilage is a kind of softer and elastic bone Cartilage is present in the following places in our body : Cartilage Cartilage is present in the pinnae of ears (upper part of ears) Cartilage is found at the end of nose. Cartilage is found on the end of bones where they meet one another at a joint Cartilage is also present (as cartilage discs) between the vertebrae of backbone. The upper part of our ear is called pinna and the lower part aled ear lobe. If we press the pinna of our ear and the ear lobe been our fingers, turn by turn, we will fin...

 FATS Like carbohydrates, fats also provide energy to our body. In fact, fats provide us twice as much energy as that provided by the same amount of carbohydrates. For example, a little butter (which is a fat) provides us much more energy than a large slice of bread (which is a carbohydrate). Butter, ghee, groundnut oil, mustard oil, sunflower oil and coconut oil are the common fats used by us in everyday life. Fats are the richest source of energy but they are more expensive than carbohydrates. Since both, fats as well as carbohydrates provide energy, therefore, the foods containing fats and carbohydrates are called 'energy giving foods'. Fats are supplied to our body by many foods such as: Butter, Ghee, Milk, Cheese (Paneer), Oil (Groundnut oil, Mustard oil, Sunflower oil and Coconut oil, etc.), Egg yolk (yellow of an egg), Meat, Groundnut, Cashew, and Soybean. Please note that fats and oils are similar substances, the only difference being that fats are solids at room temper...