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.

Explanation

Homework helps in developing discipline and study habits in students.

It encourages self-learning and independent practice, which are crucial for academic growth.

Explanation

Roman numeral LVI =

L = 50, V = 5, I = 1

So, 50 + 5 + 1 = 56.

Explanation

Present perfect passive structure: has/have been + past participle

Active: I have written a story.

Passive: A story has been written by me.

Explanation

The phrase "settle down" means to start living a stable and orderly life, often by getting married.

It's a common idiom used when someone is expected to stop moving around or partying and adopt a more settled lifestyle.

Explanation

Why has this jug been broken by you?

The structure for passive voice in present perfect tense: has/have + been + past participle.

The subject “you” becomes the agent, and “this jug” becomes the subject of the passive sentence.

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

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

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

Explanation

Mercury (Hg) is used in thermometers.

Because it expands and contracts consistently with temperature changes.

It providing accurate readings.

It also emits ultraviolet light in fluorescent tubes when electrically excited.

Explanation

Iron rusts when it reacts with oxygen and water in the air, forming iron hydroxide (Fe(OH)₃).

This compound eventually dehydrates to form iron oxide, the reddish-brown rust.