Explanation

Infrared radiation is strongly absorbed by water and by the atmosphere.

Although invisible to the eye, infrared radiation can be detected as warmth by the skin.

Nearly 50 percent of the Sun's radiant energy is emitted in the infrared region of the electromagnetic spectrum, with the rest primarily in the visible region.

Explanation

 Our home is built of bricks means ہمارا مکان اینٹوں سے بنا ہوا ہے

The bag is made of leather.

The window is made of glass. 

Explanation

• • Shuddhi and Sangathan movements were started at the end of Tehreek e Khilafat
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  • The Shuddhi movement was started by Swami Dayanand Saraswati
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  • The Shuddhi movement was started in 1923
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• Shuddhi Movement was started by Arya Samaj to bring back the people who transformed their religion to Islam and Christianity from Hinduism
  

Explanation

Spiral galaxies form a class of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae and, as such, form part of the Hubble sequence.

Explanation

Active Voice Passive Voice (Auxiliary Verb – is/am/are)

Subject + V1+s/es+ object Object+ is/am/are+ V3+ by + subject

Subject + Do/does+ not + V1 + Object Object + is/am/are+ not + V3+ by Subject

Does+ Subject+ V1+Object+? Is/am/are + Object+ V3+ by subject +?

Explanation

David William Donald Cameron is a British politician who served as Prime Minister of the United Kingdom from 2010 to 2016. 

Explanation

The atmosphere is comprised of layers based on temperature. These layers are the

troposphere

stratosphere

mesosphere 

thermosphere

A further region at about 500 km above the Earth's surface is called the exosphere.

Explanation

The heart is a muscular organ about the size of a fist, located just behind and slightly left of the breastbone.

The heart pumps blood through the network of arteries and veins called the cardiovascular system.

Explanation

MRI, and the detailed images it produces, has been a huge benefit for the study of the brain.

Its greatest innovation is allowing us to see which parts of the brain have been damaged while a patient is still alive.

Explanation

Solids have a high degree of elasticity, which means they can return to their original shape after deformation.

This property allows sound waves to travel more efficiently and quickly through solids

Because the particles are tightly bound and can transmit vibrations rapidly.