Explanation

• The Sahara Desert is the largest hot desert in the world.
• Location: Africa
• Length: Approximately 4,800 km (3,000 miles)
• Area: About 9.2 million km²

List of top deserts in the world:

Last verified on 10-05-2026

Explanation

• The Pacific Ocean is the largest and deepest ocean on Earth.
• It covers about 30% of the Earth's surface.
• It contains 97% of the Earth's water.
• The Mariana Trench, the deepest part of the ocean.
• It is located in the Pacific.
• The Arctic Ocean is connected to the Pacific Ocean via the Bering Strait.

Additional information:

• Oceans cover 71% of the Earth's surface.
• The Indian Ocean is the warmest, with the Persian Gulf being the hottest area.
• The Diamantina Trench is the deepest point in the Indian Ocean.
• Jordan does not have an ocean.
• The Arctic Ocean is the Smallest Ocean of the world.

Last verified on 17-03-2026

Explanation

• Russia is the largest country in the world.
• With a total area of 17,098,242 Km² (6,601,665 mi²).
• Tips remember: RCCU BAI

List of Largest countries by area:

Must read it

Which country has the largest population in the world?

Last verified on 09-02-2026

Explanation

• Mount Everest is the Highest peak in the world.
• It is located in Nepal.
• Height: 8,848.86m (29,032 feet)
• The first time expedition in 1953.
• It was named after George Everest in 1856.
• In the range of mountains: the Himalayas.

Additional information:

• First climbers to reach Mount Everest (1953): Tenzing Norgay and Edmund Hillary.
• First man to climb Mount Everest twice: Nawang Gombu.
• First Pakistani woman to scale Mount Everest: Samina Baig.
• First blind Asian and third person in the world to climb Everest: Zhang Hong.
• Youngest Pakistani to summit Everest: Shehroze Kashif.
• Fastest woman to climb Mount Everest: Tsang Yin-hung.

Last verified on 16-06-2026

Explanation

Canberra is the capital city of Australia

Additional information
Currency is the Australian Dollar.

The official language is English.

The national game is Cricket.

Located in the continent of Oceania.

Primary Religion is Christianity (but a secular country).

Head of Govt is Prime Minister  - Anthony Albanese.

Parliament is called the Federal Parliament.

Australia flag has three colours.

Tricks for Remember

DOLLAR

 Li-Ne-US-Ca-Fi-T-E-A

Mind trick: Li ne(a name) who lives in US likes Coffee(Ca- Fi) and Tea(T-E-A)

**Li-Ne**

Li-Liberia

Ne-New Zealand

**US**

United States

**Ca-Fi**

Ca-Canadian

Fi- Fizzi

**T-E-A**

T-Taiwan

E-Ethiopia

A-Australia

Must read

Capital of World Countries

Currency of World Countries

Last verified on 12-06-2026

Explanation

• Markhor is the national animal of Pakistan.
• “Markhor” means “snake eater.”
• It is known as a symbol of bravery and sharp intelligence.
• It is large wild goat (Capra species).
• It is found in Central Asia, the Karakoram, and the Himalayan regions.

Explanation

• Herpetology is the branch of zoology that studies reptiles and amphibians.
• Reptiles include: snakes, lizards, crocodiles, turtles.
• Amphibians include: frogs, toads, salamanders.
• The word comes from Greek “herpeton” meaning creeping animal.

Last verified on 09-06-2026

Explanation

• Syncytial theory explains the origin of multicellular animals (metazoa).
• It suggests that metazoans evolved from a multinucleated single cell (syncytium).
• Cell membranes later formed around nuclei to create separate cells.
• It explains early evolution of multicellular organisms.

Last verified on 04-06-2026

Explanation

• In dragonfly, the circulatory system does not transport gases.
• Gas exchange occurs through a tracheal system.
• Air directly reaches tissues through spiracles and tracheae.
• Blood is not involved in oxygen transport.

Last verified on 04-06-2026

Explanation

• Bronchioles are the narrowest and most numerous air passages in lungs.
• They branch from bronchi and lead to alveoli.
• They help in controlling airflow in the lungs.
• They are an important part of the respiratory system.

Last verified on 04-06-2026