Questions

The Earth has four major systems or spheres. These systems are

 1. The geosphere,

 2. The hydrosphere,

 3. The atmosphere, and 

4. The biosphere.

The biosphere is the system where we belong.

A geology is a branch of science that deals with the study of Earth, its structure and materials made it. And the person who studies this is called as Geologist.

The English scientist Tim Berners-Lee invented the WWW in 1989. The World Wide Web, also known as the WWW and the Web, is an information space where documents and other web resources are identified by Uniform Resource Locators, interlinked by hypertext links, and accessible via the Internet.

The multiplier effect means that "An effect in economics in which an increase in spending produces an increase in national income and consumption greater than the initial amount spent."

Dynamic equilibrium receptors are found in the Semicircular Canals. It monitors angular or rotational movements of the head when the body ismoving, such as a figure skater’s spinning, but maintaining balance.

Covalent bonds are bonds formed between two non metals by sharing of electrons in their outer most orbits for stable.