Explanation

• Thermometer is the instrument used to measure temperature.
• It is a device that measures the temperature of a substance or environment, typically consisting of a glass tube filled with a liquid that expands or contracts in response to changes in temperature.

Explanation

Vitamin A deficiency can cause Night Blindness.

As well as other health problems such as:

• Dry skin and eyes
• Impaired immune function
• Poor wound healing
• Increased risk of respiratory and urinary tract infections

Explanation

• Herbivores are animals that eat only plants, including leaves, stems, roots, flowers, fruits, and seeds.
• Examples of herbivores include cows, deer, rabbits, and elephants.

Explanation

Goiter is caused by iodine deficiency.

It results in an enlarged thyroid gland.

Iodine deficiency can cause mental retardation in children.

Particularly if the deficiency occurs during fetal development or early childhood.

This is because iodine is essential for brain development and thyroid function.

The effects of the thyroid come from two iodine-containing hormones.

Explanation

• Humans are born with around 300 bones, but as they grow and develop.
• Some of these bones fuse together, resulting in a total of 206 bones in the adult human skeleton.
• This process of bone fusion, called ossification.

Explanation

• The freezing point of water is 0°C (zero degrees Centigrade). 
• The boiling point of water on the Centigrade scale (also known as the Celsius scale) 100°C (one hundred degrees Centigrade).

Explanation

• In a normal man, the average heart beat is 72 times per minute.
• But it may vary from 70-80 beats per minute.

Explanation

• The freezing point of water is 0°C (zero degrees Centigrade). 
• The boiling point of water on the Centigrade scale (also known as the Celsius scale) 100°C (one hundred degrees Centigrade).

Explanation

Calcium is crucial for:

• Building and maintaining strong bones and teeth
• Muscle function and contraction
• Nerve function and transmission
• Blood clotting and wound healing

Explanation

Iron deficiency can lead to Anaemia, a condition characterized by:

• Low red blood cell count
• Pale skin
• Fatigue
• Shortness of breath
• Dizziness