attempt only

The first attempt to classify elements was made by

Big-Bang theory attempts to explain the

Which theory attempts to explain to us the origin of universe?

The earliest attempt to the scientific basis for classification is made by

Who was the earliest to attempt more scientific basis for classification ?

Who made the earliest attempt to classify living organisms?

The first attempt to solve of mechanism of organic evolution was made by :

"People often shake branches of a tree in an attempt to cause the fruits to fall." Explain.

Justify with the help of an example where a deliberate attempt by humans has led to the extinction of a particular species.