What causes pollution…………………………
a) Tree
b) Human activity
c) Both of these
d)None of these
The addition of harmful material to environment is called…………………………
a) pollutants
b) resources
c) problems
d) pollution
Pollution has increased manifold since……… century industrial revolution.
a) 18th
b) 19th
c) 20th
d) 21st
Which of the following is caused by the release of harmful gases and particulates into the atmosphere?
a) land pollution
b) air pollution
c) soil pollution
d) noise pollution
Humans have also effected the natural balance of….in the atmosphere through deforestation.
a) Gases
b) Water
c) Dust particle
d) Clouds
CNG is a……………
a) Polluted fuel
b) Harmful fuel
c) Clean fuel
d) All of these
