Explanation

Air is a homogeneous mixture of the gaseous substances

nitrogen,

oxygen, 

smaller amounts of other substances.

Explanation

Vestigial organs are organs, tissues or cells in a body

Which are no more functional the way they were in their ancestral form of the trait.

Explanation

The cave squeaker (Arthroleptis troglodytes) is a species of frog in the family Arthroleptidae.

It is endemic to the Chimanimani Mountains in Zimbabwe.

Explanation

The ribosome is a complex molecule made of ribosomal RNA molecules and proteins that form a factory for protein synthesis in cells.

Explanation

1. Mercury

Swift Planet for Mercury

***

2. Venus

Eight planets in the solar system

Explanation

An epidemic is derived from Greek epi meaning upon or above and demos meaning people.

An epidemic occurs when a large number of people in a specific area and time experience a sudden outbreak of a disease, exceeding normal expectations.

Explanation

The chemical formula of baking soda is NaHCO₃, which stands for sodium bicarbonate.

The chemical name of baking soda is sodium hydrogen carbonate or sodium bicarbonate (NaHCO3).

Sodium bicarbonate is non flammable

Baking soda is basic in nature.

Explanation

White blood cells (leukocytes) are part of the immune system.

They play a key role in defending the body against infections, diseases, and foreign invaders.

They help maintain overall health.

Explanation

Benjamin Franklin invented the lightning rod, a device used to protect buildings from lightning strikes.

He made this invention in 1752 as part of his experiments with electricity.

Explanation

White Blood Cells (WBCs), also known as leukocytes, are a vital part of the immune system.

They protect the body from infectious diseases and foreign invaders by identifying and eliminating pathogens.

Such as bacteria, viruses, and other foreign substances.