Application of fertilizers may cause emission of ________ gases.

• inert

• argon

• halogen

• greenhouse

Pesticides, in general are

• biodegradable

• non-biodegradable

• decomposable

• volatile

________ is a sequence of processes that results in increased concentration of a substance such as pesticides in organisms at higher levels in the food chain.

• eutrophication

• biological magnification

• bioaccumulation

• species extinction

_____ is a process of accumulation of chemicals in an organism or a part of an organism through respiration, food intake or skin.

• eutrophication

• nitrate pollution

• bioaccumulation

• biological magnification

Pesticide residues may enter the hydrological cycles and pollute water reservoirs, causing ______ damage to many life forms

• moderate

• reparable

• irreparable

• normal

Global atmospheric temperatures are likely to be increased due to

• burning of fossil fuels

• water pollution

• soil erosion

• none of the above

Which of the following is a management option for air pollution?

• regulations and standards

• emission charges

• transport planning

• all of the above

Example of natural environment

• soil

• water

• air

• all of the above

Example of man-made environment

• house

• road

• railway lines

• all of the above

How many components present in the environment?

• 4

• 2

• 3

• 1