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

 

 

A group of emus is called as a mob. Emus is a kind of bird which is next to ostrich in its size.

The carbon, oxygen, hydrogen and nitrogen are the key elements in aminoacids as all aminoacids contain amine (NH2) and carboxyl (COOH) as functional groups and R group for every specific aminoacid.

Cartography is the science which deals with the study and practice of making maps.

In all the above given options, there is no chemical change or reactions takes place only the shape or physical state is changed.

Yes, in any matter the particles are always moving. But the speed of the particles moving sepends on the temperature. As temperature increases, the speed of the particles also increases.

Secondary succession means in an ecosystem renewal of itself after all or a portion has been destroyed.

After a forest fire, the whole forest had destroyed but after that again renewal of that forest is also an example of secondary succession.