Explanation

• Iodine deficiency causes goiter, an enlargement of the thyroid gland.
• Iodine is essential for the production of thyroid hormones.
• Severe iodine deficiency during pregnancy or early childhood can impair brain development.

Last verified on 07-09-2026

Explanation

• The liver is the largest gland in the human body.
• It is situated in the right upper quadrant of the abdomen, beneath the diaphragm, and above the stomach.
• It is reddish-brown.
• It is weighs approximately 1.5 kg.

• The pineal gland is the smallest gland.
• It about the size of a grain of rice.
• It weighs approximately 150 mg.
• It is part of the endocrine system.

Explanation

• Largest part: Cerebrum.
• Hemispheres: Two — right and left.
• Main functions: Thinking, memory, intelligence, speech, and voluntary movement.
• Cerebellum: Mainly controls balance and coordination.
• Brainstem: Connects the brain with the spinal cord and controls vital functions.

Last verified on 03-09-2026

Explanation

• The largest bone in the human body is the femur (the thighbone)
• It is located in the upper leg, between the hip and the knee.
• It supports the weight of the body and helps you walk, run, and stand
• It is about 48 centimeters (18 inches) long.

Additional information:

• The lowest part of the backbone is called the sacrum.
• The smallest bone is the stirrup (stapes).
• The strongest bone for its size is the lower jaw or mandible.

Last updated by NA on 09-09-2026

Explanation

• Alexander Graham Bell is credited as the inventor of the telephone.
• He was awarded the first successful patent for it.
• The telephone was invented in 1876.
• Bell made the first-ever telephone call to his assistant Thomas Watson.

Last verified on 31-03-2026

Explanation

Dinosaurs are part of the reptile group, specifically a diverse group of reptiles that appeared during the Mesozoic Era.

They were the dominant terrestrial vertebrates for over 160 million years.

Explanation

Geologists are scientists who study a planet's solid features, like soil, rocks, and minerals.

Explanation

Isaac Newton formulated the law of universal gravitation, explaining how gravity works.

He famously described gravity after observing an apple fall from a tree.

Explanation

Heterotrophs are those organisms that cannot prepare their food from nature 

Hence depend on other organisms that produce food (autotrophs).

Non-green plants cannot make their food due to the absence of chlorophyll in their leaves

Explanation

The spleen is often referred to as the "graveyard of RBCs"

Because it is responsible for filtering and breaking down old, damaged, and worn-out red blood cells (RBCs).