The sun is the source of both....

The final community of succession in plants is called .....

When a man eats a fish which feeds on zooplanktons which have eaten small plants,the producer in this chain is:

An ecosystem which can be easily damaged but can recover after some time if the damaging effect stops will have:

Earth is a/an

Out of the following biogeochemical cycles, which ones are gaseous?
$I.$ Sulphur
$II.$ Phosphorus
$III.$ Nitrogen
$IV.$ Carbon
Choose the correct option.