Creatures such as insects, fish, amphibians and reptiles cannot adjust their body temperature according to

Sleep plays a vital role in enhancing the functions of the brain and helping the

The tongue is a muscle that plays an important role in helping humans speak, taste

Aeroplanes are an important mode of transportation, allowing people to travel to places all around

The human brain is the organ that controls the body’s movements and thinking and helps

A dental cavity is a hole that forms in a tooth when the outer coating

Echolocation is a method in which animals make use of sound waves to understand their

Magnets are objects that create an invisible field that can attract magnetic objects and repel

The human skeletal system comprises bones, cartilage and other structures that give the body its

The human circulatory system comprises the heart, blood and blood vessels and carries oxygen and