What is a Virus?
Viruses are tiny microorganisms that can cause diseases in humans, [...]
What are Southern lights?
The southern lights, or aurora australis, is a natural phenomenon [...]
What are Northern Lights?
The northern lights, or aurora borealis, is a natural phenomenon [...]
What is the Equator of the Earth?
The Equator of the Earth is an imaginary line that [...]
What are Hemispheres of Earth?
The Earth's hemisphere is an imaginary division of the Earth [...]
What is Electrical Energy?
Electricity (electrical energy) is a form of energy used to [...]
What is a Tree?
Trees are large living organisms found in nature. They have [...]
What is a Lichen?
Lichen is a unique form of life resulting from the [...]
What is Moss?
Moss is a small, green plant that grows in damp, [...]
What is a Barometer?
A barometer is an instrument used to measure atmospheric pressure. [...]
