Explanation

Trees release carbon dioxide at night and carbon dioxide being heavier than air descendes.So a person sleeping under a tree breathes carbon dioxide which is harmful for the human body.

Explanation

"The branch of science concerned with the nature and properties of matter and energy.

The subject matter of physics includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."

Explanation

Tiger Algebra gives you not only the answers, but also the complete step by step method for solving your equations 6,18,30,42,54,66,78,90.

Explanation

17% of 1620 is 275.4

Working out 17% of 1620

Write 17% as 

17

100

Since, finding the fraction of a number is same as multiplying the fraction with the number, we have

17

100

 of 1620 = 

17

100

 × 1620

Therefore, the answer is 275.4

Explanation

Explanation

Alternatively referred to as Control G , Ctrl+G is a shortcut key most often used to go to a line or page.

Explanation

Prophets mentioned in Quran

Explanation

The land reforms were introduced in March 1974 through martial law Regulation no. 115.

Explanation

The National Police Academy is the National Institute for training of the Police Service of Pakistan (PSP) officers who have been selected through the Central Superior Services examination.

Explanation