Carbon constitutes ______ of dry weight of organism and ______ percentage is dissolved in oceans out of total global carbon.
$49\;\%, 71\;\%$
$71\;\%, 49\;\%$
$49\;\%, 49\;\%$
$71\;\%, 71\;\%$
Eutrophic lakes means
Which ecosystem does not show variations dependent upon geographic location and rainfall
The character of an ecosystem is determined by the environmental factor which is shortest supply. This is the
Which one of the following contains very low concentrations of dissolved inorganic nutrients for algal growth
Temperate forests occur in India in