Explanation

Explanation

Brexit took place at 23:00 GMT on 31 January 2020 (00:00 1 February 2020 CET)

History

The Brexit referendum was held on 23 June 2016 in the UK.

In the referendum, the UK voted to leave the European Union (EU).

After negotiations, the official exit from the EU occurred on 31 January 2020.

Brexit marked the first time a member state left the EU.

Explanation

Pakistan's agriculture sector contributes 18.9% to country's GDP and 42.3% of its labour force (accuracy may lack)

Though recent data suggests a slight decrease to around 33.1% by 2024

Explanation

A community refers to all the different species living in a specific habitat or area,

interacting with each other and their environment.

It includes plants, animals, microorganisms, and even fungi.

While A localized group of organisms that belong to the same species is called a population.

Explanation

Water molecules are held together by hydrogen bonds,

It is a type of strong intermolecular force

Where the slightly positive hydrogen of one molecule attracts the slightly negative oxygen of another, creating a "sticky" network that gives water unique properties like surface tension.

Explanation

• Carbon dioxide (CO2) is produced when trees and fossil fuels are burned, through a process called combustion.
• Combustion releases carbon dioxide and water vapor into the atmosphere.

Explanation

The velocity of sound in air at sea level under standard conditions (around 15°C or 59°F) is approximately 343 meters per second (m/s)

The speeds of sound in different materials:

• Air: 343 m/s
• Water: 1433 m/s
• Wood: 3300-3600 m/s
• Brick: 4176 m/s
• Steel: 6100 m/s
• Diamond: 12000 m/s

Explanation

Explanation

The quote, "A right is a claim recognized by society and enforced by the state," is attributed to the prominent political theorist Harold Laski

Harold Joseph Laski was an English political theorist and economist.

He was served as the chairman of the British Labour Party from 1945 to 1946

Professor at the London School of Economics from 1926 to 1950. 

Explanation

Ms. Florence Nightingale was the founder of modern nursing.

She was an English social reformer.

She was born on 12 May 1820 in Italy.

She died on 13 August 1910 in England

Awards

• Royal Red Cross (1883)
• Lady of Grace of the Order of St John (LGStJ) (1904)
• Order of Merit (1907)

Additional information 

she was a manager and trainer of nurses during the Crimean War 

In this war, she organized to care for wounded soldiers.

Crimean War (Oct 1853- Feb 1856) was fought between The Russians and the British, French and Ottoman Turkish