Explanation

• Sunlight is a good source of vitamin D.
• When our skin is exposed to sunlight, it produces vitamin D, 
• It is essential for bone health, immune function, and the regulation of calcium levels in the blood.
• Deficiency of Vitamin D results in Rickets.

Explanation

The current President of France is Emmanuel Macron.

He has been serving as president since 14 May 2017 and was re‑elected in 2022.

Macron is the eighth President of the Fifth Republic of France.

He leads the centrist political movement Renaissance.

Last updated on 25 Jan 2026

Explanation

Chromosomes are made up of:

• Nucleic acid (DNA or RNA)
• Proteins (histones and non-histone proteins)

A chromosome is made up of proteins and DNA organized into genes.

Each cell normally contains 23 pairs of chromosomes.

Explanation

• Vitamin A deficiency → Night blindness (Nyctalopia)
• Vitamin A is important for vision and immune function.

Additional information:

• Vitamin K is essential for blood clotting.
• Vitamin D helps in calcium absorption and bone mineralization.
• Vitamin B1 supports nerve function and energy metabolism.

Last verified on 01-02-2026

Explanation

A bear market occurs when stock prices fall significantly over a period of time.

Typically, it is defined as a decline of 20% or more from recent highs.

Bullish: The opposite; a period of rising prices, optimism, and strong economic growth.

Crashing: A sudden, severe, and rapid decline in stock prices, usually due to panic or major economic shocks.

Explanation

Explanation

Explanation

Silicon Valley, in the southern Area of California.

Silicon Valley is a nickname for San Francisco.

It is home to many start-ups and global technology companies.

Apple, Facebook, and Google are among the most prominent.

Explanation

Airborne Warning and Control System (AWACS)

Provides airborne surveillance, command, control, and early warning for air defense

First operational in 1977

Explanation

Pakistan and Iran are linked by the railway line connecting Quetta (Pakistan) to Zahedan (Iran)

Pakistan: The line runs from Quetta through Taftan to the Iranian border.