Treeless biome of cold climates is
Savannah biome
Chapparal biome
Temperate biome
Tundra biome
In the dry weight of living beings ......$A$......$\%$ carbon present and ......$B$......$\%$ carbon dissolved in sea present on among whole earth and it is of ......$C$......$\%$ of whole carbon. $A -B - C$
If there was no $CO_2$ in the earth's atmosphere, the temperature of earth's surface would be
Desert can be converted into greenland by
The two vegetation of ecosystem are separated by
The organisms which participate most actively in nitrogen cycle in nature are