Explanation

Phosphorus is used in the match industry, particularly red phosphorus.

It is a key component in the production of matchsticks.

It is highly reactive and helps ignite the match when struck.

Explanation

Bacteria and fungi are decomposers that break down dead plants and animals.

They recycle nutrients back into the ecosystem, maintaining ecological balance.

Explanation

The cochlea is a spiral-shaped organ in the inner ear responsible for converting sound vibrations into nerve signals.

It contains hair cells that detect sound and send signals to the brain via the auditory nerve.

Explanation

Cornea is the transparent, dome-shaped front part of the eye.

It allows light to enter and helps focus it onto the retina.

Explanation

Skin cells form the outermost layer of the body, acting as a protective barrier.

They shield internal organs and tissues from injury, pathogens, and dehydration.

Explanation

عرض الدنيا کا مطلب ہے دنیاوی فائدے یا دنیا کی دلچسپیاں۔

یہ عربی ترکیب عام طور پر دنیا کی وقتی اور مادی چیزوں کے لیے استعمال ہوتی ہے۔

Explanation

• The Kaaba, or the House of Allah, was firstly built by the angels under the divine command of Allah.
• Later, it was reconstructed by Prophet Ibrahim (Abraham) and his son Isma'il (Ishmael) as part of their duties assigned by Allah.

Explanation

If a² + b² = c², this follows the Pythagorean Theorem, which applies only to right-angled triangles.

Therefore, the triangle is a Right triangle, where c is the hypotenuse.

Explanation

Given A = [a b; b a] and A² = [l m; ...], let's calculate A²:

A² = [a b; b a] * [a b; b a]

= [a² + b² 2ab; 2ab a² + b²]

Comparing A² = [l m; ...] with our calculation:

l = a² + b²

m = 2ab

The correct answer is l = a² + b², m = 2ab.

Explanation