What is the name of event caused by the 3200 Phaethon asteroid around 15 December of every year?

 

 

Land covers about ______ of the earth's surface.

Any undesirable change in physical, chemical or biological characteristics of air, land, water or soil is called?

What is the name of the acid in an ant's sting?

__________ acts as a shield absorbing ultraviolet radiation from the sun.

If the orbit of a planet is an ellipse then what is the point at which the Sun is located called?

In the names Mangifera indica (mango), Solanum tuberosum (potato) and Panthera leo (lion), what does the three names, indica, tuberosum and leo, represent?

___________ is the process of restoring a forest that once existed but was removed at some point of time in the past.

___________ is obtained by evaporation of sea.