Explanation

Rayon is a semi-synthetic fiber made from cellulose, derived from wood pulp or other plant materials, but it undergoes extensive chemical processing.

Explanation

Explanation

The Sun is the star at the centre of the Solar System.

Explanation

Black gold is a liquid based term applied to oil or petroleum.

It comes in black color when it comes out of the ground.

It is worth a great deal of money. Petroleum is black gold.

Coal is black diamond.

Explanation

Horticulture is the study and practice of cultivating fruits, vegetables, flowers, and ornamental plants.

Including the design and management of gardens.

Explanation

Spleen and Liver are the two organs mainly affected by malaria.

Malaria primarily targets the liver, where parasites multiply, and the spleen.

It becomes enlarged due to the destruction of infected red blood cells.

Explanation

Vitamin C is water soluble vitamin so it cannot be stored in human body.

Citrus fruits, green leafy vegetables and tomatoes are good source of vitamin C.

Explanation

As you move from the equator towards the poles, the latitude increases (up to 90 degrees).

The further you go from the equator in any direction,

the difference between the duration of the day and night at different times of the year will be bigger.

Additional information 

there are two points in the year when day and night are approximately equal in duration. 

This is called an equinox.

The equinoxes occur around:

• March 20th-21st 
• September 22nd-23rd each year.

Explanation

Explanation

A pandemic is an epidemic of an infectious disease that has spread across a large region,

for instance multiple continents ,

affecting a substantial number of individuals.