Soil is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life.Soil is formed from the breakdown of rocks into tiny pieces called sediments. The rocks are broken down through the process of weathering due to exposure to extreme temperature changes, windblown particles, precipitation and flowing water, ... Read More

Given :A figure of lines crossing each other is given.To do :We have to write the four pairs of perpendicular lines from the given figure.Solution:A line is said to be perpendicular to another line if it makes an angle of 90° with it.  In the given figure, 4 pairs of perpendicular lines ... Read More

Given :The given expression is $\frac{3^{-\frac{6}{7}} \times 4^{-\frac{3}{7}} \times 9^{\frac{3}{7}} \times 2^{\frac{6}{7}}}{2^{2}+2^{0}+2^{-2}}$.To do:We have to simplify the given expression.Solution:$\frac{3^{-\frac{6}{7}} \times 4^{-\frac{3}{7}} \times 9^{\frac{3}{7}} \times 2^{\frac{6}{7}}}{2^{2}+2^{0}+2^{-2}}$We know that, $(a^m)^n = a^{m\times n}$$a^m \times a^n = a^{m+n}$$\frac{a^m}{a^n} = a^{m-n}$$\frac{3^{-\frac{6}{7}} \times 4^{-\frac{3}{7}} \times 9^{\frac{3}{7}} \times 2^{\frac{6}{7}}}{2^{2}+2^{0}+2^{-2}} = \frac{3^{-\frac{6}{7}} \times (2^2)^{-\frac{3}{7}} \times (3^2)^{\frac{3}{7}} \times ... Read More

Infections that transfer from one person or animal to another, are known as communicable diseases, often known as infectious diseases or transmissible diseases.It results from the presence and development of pathogenic biologic agents in an animal host, such as a human, such as viruses, bacteria, and fungi.For instance, hepatitis A and B, ... Read More

Given :The given expression is $(a, 4) = (-2, a+b)$To do :We have to find the value of a and b.Solution :We know that, Two ordered pairs are equal if and only if the corresponding first components are equal and the second components are equal.  Therefore, $a = -2$ and ... Read More

Yes, fabrics are made up of Yarns of fibres.Fibres are thread-like structures that are long, thin and flexible. These may be spun into yarns and then made into fabrics. Fabric means a woven material, a textile or other material resembling woven cloth. Fabric is made up of yarns.Fabrics are made by ... Read More

The Sun's surface is about 10000 degrees Fahrenheit. Nuclear fusion is always taking place on Sun, creating heat and protons. This is the heat that comes to the earth's surface. 

A magnet is a material or object that produces a magnetic field and shows the effects such as attraction and repulsion of other objects. This magnetic field is invisible but is responsible for the property of a magnet: it exerts a force that pulls on other ferromagnetic materials, such as iron, and ... Read More

The objects that are not capable of emitting light by themselves are called non-luminous. Examples of non-luminous objects are moon, earth,  etc.

The properties of the triangle :A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. The properties of the triangle are: Area of a triangle $= \frac{1}{2} \times base \times height$.The perimeter of a triangle is the sum of all its three sides.The ... Read More