..........is a primary consumer.

............. cycle is a gaseous cycle

............is an important component of proteins and nucleic acids.

............. is a sedimentary cycle.

Find the odd man out: Nitrogen cycle, oxygen cycle, carbon cycle, phosphorus cycle.

Find the odd man out: Burning of fossil fuels, forest fire, respiration, volcanic activity.

Carbon dioxide is released into the atmosphere through ............. .

The Indian Institute of Ecology and Environment, Delhi, has published........... .

.......... is a secondary consumer.

............ is the most important source of energy in any ecosystem.

Most organisms cannot use the free form of ................. .

Conversion of nitrogen compounds into gaseous nitrogen is called........ .

Microbes which do not need oxygen are called...........

Find the odd man out: Grasshopper, squirrel, elephant, lion

Oxygen forms ......... of the atmosphere.

Fungi and other microbes are called..........

Tiger is a /an.......... .

The pattern of energy exchange in an ecosystem is called a ............... .

Ecological Pyramid is called............

Conversion of ammonia into a nitrite and then nitrate is called..........

Find the odd man out: Photosynthesis, combustion, decomposition, corrosion.

Amount of matter and energy .............. from the lowest level to the highest level.

.................. irst proposed the concept of Ecological Pyramid in 1927.

Plants convert carbon dioxide into .......... by the process of photosynthesis.

Carbon atoms are circulated and recycled through ............ .

An intricate network of food chains is called...............

Oxygen is released in the process of

Flow of energy in an ecosystem is............ .

Find the odd man out: Frog, Owl, Squirrel, Fox

Find the odd man out: Photosynthesis, Nitrification, Ammonification, Denitrification.