Complete the missing links:
Afforestation can check the advancement of ______

Complete the missing links: ………………. Is a hetrocrine gland.

Complete the missing links: Cocoon is secreted by ……………….

Complete the missing links: COD stands for _________

Complete the missing links: Darwin's finches are examples of _________ speciation.

Complete the missing links: Maximum emission of CO occurs by burning of ________

Complete the missing links: Ecology is the study of………………

Complete the missing links: Progesterone is secreted by ________

Complete the missing links: Autotomy and regeneration are peculiar character of ……………. .

Complete the missing links Stalk of ovule is called_____

Complete the missing links: Secondary treatment for polluted water are _________ and activated sludge method.