Environmental Issues · Biology · MHT CET (Biology)

The purpose of biological treatment of sewage is to __________ .

Noise can cause the following EXCEPT __________.

'Algal bloom' mainly includes _________ .

The quantity of CO and hydrocarbons in the exhaust of a motor vehicle can be reduced by installing ____________ in it.

i. a scrubber

ii. an electrostatic precipitator

iii. a catalytic converter

Select the correct option:

Given below are two statements.

Statement I - Thickness of ozone is more above the poles than at the equator.

Statement II - The 'ozone holes' are generally found in Antarctic region.

In the light of above statements, select the correct option given below:

Match the Column I with Column II with reference to biomagnification of DDT.