All members of a species that live in area make up:

• An ecosystem

• A habitat

• Population

• A community

In nitrogen cycle, gaseous nitrogen is converted to ammonia by

• Assimilation

• Nitrification

• Nitrogen Fixation

• Ammonification

whole of the life-sustaining area of earth is:

• Biosphere

• Atmosphere

• lithosphere

• Hydroshpere

Ecology is the study of:

• plants and animals

• decomposers

• physical factor

• interaction of all

Green Plants is an ecosystem are:

• Producers

• Consumers

• Decomposers

• None of these

A lion in a food chain is a

• Producers

• secondary consumers

• tertiary consumers

• decomposers

which of the following is the macronutrient?

• Boron

• Iron

• Copper

• Carbon

Acid Present in acid rain may be

• H2SO4

• HNO3

• both a and b

• none of these

Which of the following is not a condition for the formation of Smog?

• Sufficient NO

• Sunlight

• less movement of air

• winds

Incineration of municipal waste is carried out in the temperature range of:

• 250 to 500 °C

• 500 to 900 °C

• 950 to 1300 °C

• 900 to 1000 °C