Explanation

The inner cylinder that carries light.

It's made of glass or plastic.

It has a high refractive index. 

The middle cylinder that surrounds the core.

It has a lower refractive index.

It's typically made of glass, plastic, or silicone.

The outer layer that protects the fiber.

It's usually made of plastic or another material.

Explanation

Explanation

Explanation

Appendicitis is the inflammation of the appendix.

It is a small, tube-shaped organ attached to the large intestine in the lower right abdomen.

Appendicitis is a medical emergency that requires urgent treatment.

Explanation

Explanation

• Males: 18 inches (45 cm)
• Females: 17 inches (43 cm)

• Cylindrical bundle of nerves.
• Extends from the brain through the backbone.

Function:

• Relays information between the brain and body.
• Part of the central nervous system (with the brain).

Explanation

• Carbon dioxide: 0.04%
• Oxygen: 21%
• Nitrogen: 78%
• Other gases: 1%

• Carbon dioxide: 4.4%
• Oxygen: 16%
• Nitrogen: 79%

Explanation

Fruit and vegetables are a good source of vitamins and minerals

Vitamins: A, C, K, E, B vitamins (especially Folate).

Minerals: Iron, Calcium, Potassium, Magnesium.

Fiber: Aids in healthy digestion and keeps you feeling full.

Antioxidants: Carotenoids, polyphenols, and chlorophyll fight cell damage. 

Explanation

The human brain is similar to a computer's central processing unit (CPU).

The CPU processes instructions from the keyboard, mouse, and computer programs, and sends commands to other components in the computer.

Similarly, the brain regulates the functioning of all parts of the body.

Explanation