Which among the following was the biggest land dinosaur?

Which two geographical regions are separated by high mountains?

Following are avian characters found in $Archaeopteryx$ $lithographica$,$EXCEPT$ . . . . . . .

Gene flow occurs through generations. Gene flow can occur across language barriers in humans. If we have a technique of measuring specific allele frequencies in different populations of the world,can we not predict human migratory patterns in pre-history and history? Do you agree or disagree? Provide an explanation for your answer.

Which of the following is an incorrect match?

The greatest evolutionary change enabling land vertebrates to be completely free from the water habitat was the development of: