How are plastic bags made?
Plastics bags are made up of polyethylene in its low density form (LDPE). This polythene is derived from natural gas, crude oil and non-renewable sources. Blown film extrusion or “tubular film extrusion†is one of the most common ways to make a plastic bag. The […]
Why do we need body hair?
Hair has many important roles in our body. Let’s discuss them one by one. PROTECTION Hair is one of the important parts of integumentary system of our body. It serves us by preventing the foreign particles like dust to enter the body. For e.g. hair […]
Why do people bite their nails?
The clinical name for the nail biting is “chronic onychophagiaâ€. Mostly nail biting starts from the childhood and it gradually becomes habit as a person grows up. And if this habit is because of nervous condition then instead of removing the habit we should try […]
How are twins born?
When two offsprings are produced in a single pregnancy, each of them is called a twin. There are two types of twins, monozygotic or identical twins and dizygotic or fraternal twins. The development of twins depends on the fertilization process. Mono zygotic twins or ‘identical […]
What causes belly fat?
People who lead sedentary lifestyles have more belly fat as compared to the people who remain active because the calories required by the body is absorbed by it and the extra ones still remain which changes to fats. It is situated on the top of […]
How do stars form?
Stars are the beautiful objects seen in the sky but what makes them beautiful? What are they made up of? Stars emerge from the dust clouds that are present in all galaxies. The great disturbance and movement deep within the dust cloud causes the knots […]
Why did World War I start?
“Great war†is the other name of world war I. It was started due to many reasons but the foremost cause of all is the assassination of Archduke Frencis Ferdinand, the next heir of Austro-Hungarian Empire and his wife Sophie during their Serbia visit. They […]
How to remove blackheads?
Blackhead is a small bump on your skin. It is caused due to the oily skin, whereas whitehead is caused due to both oily and dry skin. There are millions of tiny pores in our skin. Many times the dead skin cells and excess oil […]
Why do people sleep?
Sleep is very important for every mammal, reptile, bird, and amphibian. Bat needs 20 hours of sleep per day, human eight hours and giraffes two hours. The animals that are low in food chain sleep less and this protect them from predators when they sleep […]