Out of the following biogeochemical cycles which one is gaseous?
$I.$ sulphur $II.$ Phosphorus
$III.$ nitrogen $IV.$ Carbon
Choose the correct option
$Only \;I$
$Only \;II$
$Only \;IV$
$III \;and\; IV$
Which of the following ecosystems will be more productive in terms of primary productivity ? Justify your answer. A young forest, a natural old forest, a shallow polluted lake, alpine meadow.
Mention type of nutrient cycling explaining it.
Most animals are tree dwellers in a
Climax vegetation of a region is generally
Phosphorus cycles in the form of