Explanation

مرکب اضافی وہ ہوتا ہے جس میں دو اسم ایسے ملیں کہ پہلے اسم کی دوسرے اسم سے نسبت ہو، جیسے "علم کا دروازہ"، "بچوں کی کتاب"۔

اس میں "کا، کے، کی" یا زبر (اضافت) استعمال ہوتی ہے۔

Explanation

Diphtheria is a bacterial infection caused by Corynebacterium diphtheriae.

It affects the respiratory system.

It can lead to serious complications if untreated.

Explanation

A circuit is a closed path through which electrons (electric current) flow.

It typically includes components like resistors, batteries, and wires, allowing controlled movement of current.

Explanation

"Kind" is the correct adjective to describe someone's behavior or nature.

Kind means قسم، مہربان

Explanation

Agriculture was the primary economic foundation of ancient civilizations (e.g., Mesopotamia, Egypt, Indus Valley). It provided:

• Food surplus, enabling population growth.
• Raw materials (e.g., cotton, wool) for trade and crafts.
• Stability required for societal development.

Explanation

Explanation

The Mesopotamian Civilization developed between the Tigris (Dajla) and Euphrates (Furat) rivers.

This region is also known as the "Cradle of Civilization."

Explanation

Petroleum, coal, and natural gas are all fossil fuels formed from the remains of ancient plants and animals.

They are non-renewable energy sources and major contributors to global energy production.

Explanation

Sindhu refers to the Indus River and its surrounding region, traditionally associated with seven rivers.

The word Hindu was later derived by Persians from Sindhu to describe the people living beyond the Indus.

Explanation

Leukemia is a type of cancer that affects the white blood cells.

It causes the body to produce abnormal white blood cells that don't function properly.