Explanation

Radon is a gas that can be accumulated in poorly ventilated buildings.

Explanation

• A habitat is the natural environment in which a living thing resides.
• Including all the living and non-living factors that affect its survival and growth.

Explanation

Vitamin C, also known as ascorbic acid, is necessary for the growth, development and repair of all body tissues.

Vitamin C is a water-soluble vitamin found in citrus fruits and other fruits and vegetables, and is also sold as a dietary supplement.

A natural water-soluble vitamin (Vitamin C)

Vitamin C, also known as ascorbic acid.

Vitamin C is necessary for the growth, development, and repair of all body tissues.

Explanation

Explanation

• The lungs are the organs responsible for exchanging oxygen and carbon dioxide through the process of respiration.
• They consist of air-carrying tubes (bronchi and bronchioles) and tiny sacs (alveoli) where gas exchange occurs.

Explanation

Explanation

AIDS stands for Acquired Immunodeficiency Syndrome.

It is caused by the HIV virus.

The virus primarily attacks the immune system.

This weakens the body's defense against infections and diseases.

Explanation

Explanation

• The liver produces bile, which is a digestive fluid that helps break down fats and absorbs fat-soluble vitamins.
• The liver produces about 1 liter of bile daily, which is then stored in the gallbladder and released into the small intestine through the bile duct.

Explanation

A normal blood pressure level of 120/80 mmHg.

High-normal: 130 to 139 mmHg

High: Greater than 140 mmHg

while

mmHg stands for " Millimeter of Mercury"

The instrument used to measure blood pressure is: Sphygmomanometer.