Explanation

The famous book History of the Saracens was written by Justice Syed Ameer Ali.

It is a detailed account of the rise and fall of the Arab Empire and provides insights into Islamic history.

Explanation

Algae, especially phytoplankton in oceans, are responsible for producing the largest amount of oxygen on Earth.

It contributing to over 50% of the planet's oxygen supply.

Explanation

Let's analyze the given inequality: k ≤ x ≤ 3k + 12

We can derive the following conclusions:

I. x - 12 ≤ 3k: Subtracting 12 from all parts of the inequality gives x - 12 ≤ 3k - 12 + 12, which simplifies to x - 12 ≤ 3k. (True)

II. k ≥ -6: Since k ≤ x and x ≤ 3k + 12, we can substitute x for k in the second part of the inequality, getting k ≤ 3k + 12. Subtracting 3k from both sides gives -2k ≤ 12, and dividing by -2 (which flips the inequality sign) gives k ≥ -6. (True)

III. x - k ≥ 0: Since k ≤ x, we can subtract k from both sides to get x - k ≥ 0. (True)

Since all three statements are true, the correct answer is: I, II, and III

Explanation

Execution time is the time a computer takes to complete a job or instruction.

It measures the duration from the start to the end of processing a task.

It is crucial for evaluating processing speed and efficiency.

Explanation

Caffeine occurs naturally in the tea plant,

Camellia sinensis, so all brewed tea contains some caffeine. 

Tea leaves contain 3.5% caffeine,

while

Coffee beans have 1.1–2.2%.

Explanation

The Alt key Alt on a computer keyboard is used to change  the function of other pressed keys

Explanation

"Poverty" and "Prosperity" are opposites.

Just as "Intelligence" and "Stupidity" are.

Both pairs follow the relationship of contrasting qualities.

Explanation

Number of tiles on one side of the room = 21 tiles.

Total tiles = B21×4= 84.

Since 4 tiles at each corner are shared by both rows, subtract these: 84−4= 80 tiles.

Explanation

It connects two larger landmasses and separates two bodies of water. This type of isthmus is called a tombolo.

The Isthmus of Panama, connecting North and South America.

The Isthmus of Suez, connecting Africa and Asia.

Explanation

Transcription is the process by which the information in a strand of DNA is copied into a new molecule of messenger RNA .