Explanation

Explanation

The sentence should read: "This is the oldest tree in the forest."

The word "elder" is often confused with "oldest", but they have slightly different meanings:

• "Elder" typically refers to someone or something that is older than others, but not necessarily the oldest.
• "Oldest" refers to someone or something that is the most ancient or has been around the longest.

Explanation

The Treaty of Sèvres was signed on August 10, 1920, in Sevres, France.

It was a 1920 treaty signed between the Allies of World War I and the Ottoman Empire. 

The treaty ceded large parts of Ottoman territory to:

• France
• the United Kingdom
• Greece and Italy

The 1923 Treaty of Lausanne, which superseded the Treaty of Sèvres,

ended the conflict and saw the establishment of the Republic of Turkey.

Explanation

In computer science, the levels of representation are typically shown from high-level to low-level as:

• High-level: Software (e.g., C++, COBOL, JAVA)
• Low-level: Hardware (e.g., machine code, assembly language)

Explanation

10^-12: Picosecond (ps)

10^-6: Microsecond (μs)

10^-9: Nanosecond (ns)

10^-3: Millisecond (ms)

10^-18: Attosecond (as)

10^-15: Femtosecond (fs)

10^-21: Zeptosecond (zs)

10^-24: Yoctosecond (ys)

Explanation

Profit = Selling Price - Cost Price

= 540 - 470

= 70

Profit Percentage = (Profit ÷ Cost Price) × 100

= (70 ÷ 470) × 100

= 15 (14.89%)

Explanation

"The sentence is in the present perfect tense, indicating an action that started in the past and continues to the present.

'Have resigned' is the correct phrase to use, showing that seven people left their job."

Explanation

7x - 1 = 4x + 8

Add 1 to both sides:

7x = 4x + 9

Subtract 4x from both sides:

3x = 9

Divide both sides by 3:

x = 3

So, the value of x is 3.

Explanation

Smoke from industries causes Smog.

It is a type of air pollution caused by the interaction of smoke, gases, and other atmospheric pollutants.

Smog is a harmful mixture of smoke, sulfur dioxide, and other pollutants that can cause respiratory problems and other health issues.

Explanation

In the sentence, "not only" and "but also" are correlative conjunctions that connect two clauses or phrases of equal importance.

They are used to show addition or similarity between the two clauses.

• "Not only" is a conjunction phrase that introduces the first clause.
• "But also" is a conjunction phrase that introduces the second clause.