Question

Fill in the blanks....

1) Example of persistent pollution is _________
2) Depletion of ozone layer in the atmosphere is due to _________
3) By _________ technology we can get many calve if superior breed in short time.

answers correctly if anyone know...

Answer 1

2.)CFCs
3.) hybridization

Answer 2

Dear user !!

Your answers are :-

(1) DDT

(2)CFCs

(3)Breeding




Hope it helps you !!