Explanation

• Most headaches are caused by irritation or inflammation of the nerves in the head and neck, rather than the brain itself.
• This can be due to various factors such as tension, stress, or medical conditions.

Explanation

• The adult human brain weighs about 3 pounds (1,300-1,400 g).
• The adult human brain is about 2% of the total body weight.
• The average human brain is 140 mm wide.
• The average human brain is 167 mm long.

Explanation

• Skull forms a protective covering for the brain.
• The main and overall function of the skull is to protect the brain and sensory organs and support facial structures.
  

Explanation

• The brain, situated in the cranial cavity is an important internal organ.
• It is the control centre of our body.
• It controls the movements and all that we do.
• The brain is protected by the skull.

Explanation

Science is the systematic study of the nature and behavior of the material and physical universe, based on observation, experiment, and measurement, and the formulation of laws to describe these facts in general terms.

Explanation

• The sun rises in the East and sets in the West.
• This means that the Earth is rotating from West to East. 
• Earth revolves in orbit around the Sun in 365 days, 6 hours, 9 minutes.
• With reference to the stars, at a speed ranging from 29.29 to 30.29 km/s.
• The 6 hours, 9 minutes add up to about an extra day every fourth year,
• which is designated a leap year, with the extra day added as February 29th.

Last updated 06 Nov 2026 by NA