Have you ever seen a green layer on a pond or on a moist area

According to Newton's Law of Gravitation, the Gravitational Force is a universal force between all

Division: The arithmetic operation includes the four essential functions, and they are addition, subtraction, division

Food Chain: There are different types of plants and animals in the ecosystem which interact

Unit of Conversion is a multi-step process involving multiplication or division by a numerical factor.

Water pollution is described as the release of pollutants into bodies of water that render

Combination of Resistances: Resistance measures the amount of opposition offered by a conducting material to the

Pythagoras Theorem: Pythagoras Theorem says that the square of the hypotenuse or longest side of

Percentage: A percentage is a mathematical term that implies a component per hundred. The word 

Digestive System plays a very important role in our body. We eat food to stay healthy,