Micro-organism system
Plant system
Animal system
Soil system
Philippines
Indonesia
Malaysia
India
Ernst Haeckel
Charles Darwin
Robert Whittaker
Arthur Tansley
Dehradun
New Delhi
Jaipur
Nagpur
A.G. Tansley
E.P. Odum
G. Mendal
C.C. Park
Photosynthesis process
Photochemical process
Chemosynthesis process
Hydrolysis process
M.J. Bradshaw
M. Nicolson
W.M. Adams
R.H. Whittaker
Noise pollution
Soil pollution
Water pollution
Air pollution
Prairie
Taiga
Savannah
Selvas
Water cycle
Nitrogen cycle
Carbon cycle
Oxygen cycle
