In which trophic level does the Sparrow belong as a consumer?

Some of the nutrient cycles are labelled as below:
$I$. Sulphur cycle
$II$. Phosphorus cycle
$III$. Carbon cycle
$IV$. Nitrogen cycle
Of these,the sedimentary cycle is represented by:

Match the following columns.

Column-$I$	Column-$II$
$(a)$ Phytoplankton,grass	$(p)$ First trophic level
$(b)$ Man,Lion	$(q)$ Herbivore
$(c)$ Zooplankton,Cow,Grasshopper	$(r)$ Third trophic level
$(d)$ Birds,Wolf	$(s)$ Top carnivore

Give scientific reasons: Coral reefs are not found in the regions from West Bengal to Andhra Pradesh,but are found in Tamil Nadu and on the east coast of India.

Which of the following is $NOT$ a gaseous biogeochemical cycle in an ecosystem?

Arrange the stages of hydrarch succession in the correct sequence.