Explanation

A decade consists of 10 years.

It is a period of ten consecutive years.

Explanation

Tuberculosis (TB) is primarily treated with a combination of antibiotics, which is a form of chemotherapy.

The treatment usually involves a prolonged course of multiple antibiotics to eliminate the bacteria.

Explanation

Diphtheria is a bacterial infection caused by Corynebacterium diphtheriae.

It affects the respiratory system.

It can lead to serious complications if untreated.

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.