One way cycle is
$CO_2$ cycle
$H_2O$ cycle
Free energy cycle
$O_2$ cycle
Vertical distribution of different species occupying different levels in a biotic community is known as
Robert Constanza and his colleagues have put an average price tag....... for ecosystem services
Which of the following is a biome
In carbon cycle, source of carbon to plants is
Plants growing in saline and marshy conditions are called