Explanation

Air contains water vapour, smoke, dust particles, and ozone in varying amounts.

These components are naturally present in the atmosphere, contributing to various environmental and weather phenomena.

Explanation

The measure of each exterior angle of a pentagon = 360°/n = 360°/5 = 72°.

Explanation

To convert the octal number (143)₈ to decimal:

Multiply each digit by the corresponding power of 8:

(1 × 8²) + (4 × 8¹) + (3 × 8⁰)

= (1 × 64) + (4 × 8) + (3 × 1)

= 64 + 32 + 3

= 99

Explanation

The words like on, over, at, under, by etc. are called Prepositions.

"Under" is a preposition showing the relationship between the cat and the table.

Prepositions indicate position, direction, or time in a sentence.

Explanation

Scarcity means کسی چیز کی کمی یا قلت

In short supply means مختصر فراہمی میں

Explanation

The term ellipses means omission.

An ellipsis (...) is used to omit parts of a passage without changing the meaning.

It helps to shorten long quotations or texts for clarity and relevance.

Explanation

In indirect speech, "have to" becomes "had to" and "we" changes to "they" when referring to others.

The sentence is in the past reporting tense, so verb and pronoun shifts are necessary.

Explanation

An oxbow lake forms when a meander of a river is cut off, creating a crescent-shaped water body.

It is typically found along floodplains where rivers change course over time.

Explanation

President Zia-ul-Haq nominated Muhammad Khan Junejo as the Prime Minister of Pakistan on March 20, 1985.

Prime Minister Muhammad Khan Junejo announced his five-point reform program in December 1985.

The points focused on Islamization, economy, accountability, law and order, and administrative reforms.