Carbohydrates, lipids and protein are formed from their basic building blocks by
Addition of carbon to each molecule
Addition of oxygen to each molecule
Removal of a water molecule between building blocks
Addition of a water molecule between building blocks
The theory of random genetic drift was proposed by
The gases used in the spark-discharge apparatus were
In which era Protozoa, sponge and algae were originated?
In nature, the occurrence of mutations are
Which of the following had huge fearsome dagger like teeth?