Explanation

• The asteroid belt is a region of space where many small rocky bodies, called asteroids, orbit the Sun.
• It's also known as planetoids or minor planets.
• It is located between the orbits of Mars and Jupiter, spanning from about 2.2 to 3.2 astronomical units (AU) from the Sun.

Explanation

• A parasite is an organism that feeds and lives in or on part of another organism (host), often causing harm to the host.
• Examples of parasites include tapeworms, fleas, and lice.

Explanation

• ESA (European Space Agency) is an intergovernmental organization.
• It dedicated to the exploration of space, with 22 member states from Europe.
• It was established in 1975.

Explanation

Sputnik 1 was the first artificial Earth satellite.

It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program.

ND2-03-2023

Explanation

• RKA (Roscosmos) is the space agency of Russia.
• It was established in 1992.
• RKA is the Russian Federal Space Agency, formerly the Soviet Space Program, which launched Sputnik 1, the first artificial satellite, and sent Yuri Gagarin, the first human, to space.
• Roscosmos is headquartered in Moscow.

Explanation

• SUPARCO (Space and Upper Atmosphere Research Commission) is the space agency of Pakistan.
• It was established in 1961.
• SUPARCO is responsible for the national space program of Pakistan and has developed the capacity for a national satellite program.

Explanation

• ISA (Iranian Space Agency) was established in 2004.
• The Iranian Space Agency is responsible for the national space program of Iran.

Explanation

• When a substance (the solute) is dissolved in a liquid (the solvent) and no new substance is formed.
• The resulting mixture is called a solution.

Explanation

• Biotic components refer to the living things in an environment.
• Including plants, animals, microorganisms, and fungi.

Explanation

• The speed of sound is maximum in gold, with a value of approximately 3240 meters per second (m/s).

The speed of sound in different materials:

• Air: 332 m/s
• Sea water: 1530 m/s
• Lead: 2160 m/s
• Gold: 3240 m/s
• Brick: 3650 m/s
• Copper: 4760 m/s
• Glass: 5100 m/s
• Aluminium: 6420 m/s