Fill in the blanks:
Teh ........ layer of earth in which crops can be grown is called soil.

The top layer of the earth's surface over which plants are grown is called

The outermost layer of earth is called

In which month onion crop is grown?

Fill in the blanks : The outer layer of blastule is called …………. . It does not take part in the formation of embryo proper .It gives rise the ………….. Membranes .