Angiosperm originated about 100 million years ago.

Earth has originated about how many years ago ?

Dominant flora, 200 million years ago was that of

The first non-ceelular form of life could have originated ____ bilion years back

Fossil fuels are full of energy stored from photosynthesis millions of years ago.

In the solar system of the milky way galaxy, earth was supposed to have been formed about…… billion years back

(a) In human genome which one of the chromosomes has the most genes and which one has the fewest? (b) Scientists have identified about 1.4 million single nucleotide polymorphs in human genome. How is the information of their existence going to help the scientists?

The population of a village increase by r% each year. If P be the population after n years, then population n years ago was

Fill in the blanks : ________ fuels are formed from the remains of plants and animals over a span of millions of years.

Earth originated in the past period of about

The population of the village increases by r% each year. If P be the population aftern years, then population n years ago was