Among the following which one is a abiotic component of the environment ?

All organic compounds contain :

Water vapour formed by transpiration and respiration form :

The organism and the physical environment of the habitat form an ecological complex called :

Name the organism which is involved in denitrification ?

The energy trapped by green plants is relayed through a series of heterotrophic organisms, this process is called :

Surroundings in which animals and plants live is called as :

During photosynthesis which gas is liberated in the atmosphere ?

Name the process in which the ammonia is converted into nitrites and nitrates ?

The life sustaining zone of earth, where lithosphere, hydrosphere and atmosphere interact is called :