Name an organism found as secondary carnivore in an aquatic ecosystem.
In aquatic ecosystem foodweb can be drawn as follows: Producer (phytoplankton) $\rightarrow$ Primary consumer (zooplankton) $\rightarrow$ Secondary consumer (small fish and water bug) (first carnivore) $\rightarrow$ Tertiary consumers (Secondary carnivores big fishes : Birds living in water like Crane and Duck.
Therefore big fishes and birds seen in water like Crane and Duck which a acquires position as tertiary consumers or secondary carnivores.
Identify the correct type of food chain.
Dead animal $\rightarrow$ Blow flymaggots $\rightarrow$ Common frog $\rightarrow$ Snake
In ecological crisis, whom interference play important role
Driving force of an ecosystem is
One of the following atoms often limit the primary productivity of an ecosystem
$A$- Grasshopper is included in primary consumer.
$R$- Fishes and birds are included in top carnivore.