Question

Air is the most important (a) - of human environment. Man carrot
(b) -- a single moment without air, But Who
do not think that it is we who {c)--this most vital element. Clear air
is essential for life. Air is polluted in many ways. For example, smoke
pollutes air. Man makes fire to (d) - his food, to make bricks, bums
refuse melts pitch for road construction and bums wood. All these
things produce heavy (e) - and this smoke pollute air.​

Answer 1

Answer:

a. resource

b. live

c. pollute

d. cook

e. smoke