Explanation

Astronomy is the study of everything in the universe beyond Earth's atmosphere.

That includes objects we can see with our naked eyes, like the Sun , the Moon , the planets, and the stars 

Explanation

Vestigial organs are organs, tissues or cells in a body

Which are no more functional the way they were in their ancestral form of the trait.

Explanation

Pluto has snow-capped mountains covered in methane frost, and although they look similar to snowy mountain chains on Earth

Discovered: February 18, 1930

Discoverer: Clyde Tombaugh

Moons: Charon, Nix, Styx, Kerberos, Hydra

It is the ninth-largest and tenth-most-massive known object to directly orbit the Sun.

It is the largest known trans-Neptunian object by volume

AGM 30.4.23

ND27-7-2023

Explanation

The fluid in your lead-acid battery is called Electrolyte.

It's actually a mixture of sulphuric acid and water.

Explanation

Explanation

Straw, camphor, alcohol, petrol, diesel etc. catch fire easily to release heat energy and light energy.

So, these are examples of combustible substances.

Explanation

An optical fiber is a flexible,

transparent fiber made by drawing glass  or plastic

To a diameter slightly thicker than that of a human hair.

Explanation

Modification of stationary barchans, which are crescent-shaped sand dunes.

It often leads to the formation of linear dunes, known simply as "dunes."

These dunes are typically longer and straighter than the original barchan shape.

Explanation

A nebula is a giant cloud of dust and gas in space.

Some nebulae come from the gas and dust thrown out by the explosion of a dying star, such as a supernova.

Explanation

A mature tree can absorb approximately 22 kilograms (or 48 pounds) of carbon dioxide from the atmosphere annually.

This is a remarkable process called carbon sequestration, where trees help remove CO2 from the atmosphere, storing carbon in their trunks, branches, roots, and soil.