Question

1.Fill in the blanks:- ( 5 marks) a) Polluted air could be harmful to the……… b) ……….. pollution is unwanted human created sound. c) The steam engine was invented by………. d)……………. transport connects two places on the hills over a valley. e) Indian……… is the largest railways in the world.
only answer​

Answer 1

Answer:

environment

noise

?

air

safari