Abyssal zone of oceans is characterized by
Presence of sunlight and producers
Absence of sunlight and all living organisms
Absence of sunlight but presence of producers
Absence of sunlight and presence of consumers and decomposers
Distinguish between
$(a)$ Grazing food chain and detritus food chain
$(b)$ Production and decomposition
In what order do a hawk, grass and rabbit form a food chain in a meadow?
Fill in the trophic levels $(1, 2, 3$ and $4)$ in the boxes provided in the figure.
If phytoplankton are destroyed in the sea, then
Which is not a structural aspect of ecosystem?