What was the cranial capacity of $Homo$ $habilis$?

Which organisms became dominant when reptiles declined on Earth?

What was the brain capacity of $Homo$ $erectus$?

The first mammals were like $A$. Their fossils are small-sized. Mammals were $B$ and protected their unborn young inside the mother's body. Choose the correct option for $A$ and $B$ to complete the given $NCERT$ statement.

Australopithecines probably lived in the

The most primary hominid appeared during which period?