Explanation

Aluminum is the most abundant metal in the Earth's crust, and the third most abundant element therein, after oxygen and silicon.

MOST IMPORTANT KEY POINTS:

Most abundant elements found in air are? (1) Nitrogen (2) Oxygen (3) Argon

Most abundant elements found in earth’s crust are? (1) Oxygen (2) Silicon (3) Aluminum

Most abundant elements found in Universe are? (1) Hydrogen (2) Helium (3) Oxygen

Most abundant elements found in Human Body are? (1) Oxygen (2) Carbon (3) Hydrogen

Explanation

The human body typically has 206 bones

At the time of birth, there are 270 (300) bones which fuse with time to come to a total of 206 bones.

The total bones of our body can be divided into:

• the axial skeleton (80) 
• the appendicular skeleton (126)

The newborn child has 300 bones.

Longest bone: Femur (thigh bone)

Shortest: Stapes (one of the 3 small bones inside the ear)

The human head has 22 bones.

Explanation

Explanation

Demography is the statistical study of human populations.

Demography examines the size, structure, and movements of populations over space and time. 

Explanation

John McCarthy is recognized as the father of Artificial Intelligence due to his astounding contribution in the field of Computer Science.

John McCarthy was an American computer scientist

Note: Artificial Intelligence is a branch of Computer science, which aims to create intelligent machines so that machine can think intelligently in the same manner as a human does.