A wolf has just eaten a lamb when tiger saw the wolf attacked it and consumed it. The tiger is in ecological terms
A producer
A primary consumer
A secondary consumer
A tertiary consumer
Energy requirement for maintenance of body _____ with successively higher trophic level.
Which of the following groups is absolutely essential functional component of the ecosystem?
Which of the following are the essential sources for releasing in the atmosphere?
$I.$ Burning of wood
$II.$ Volcanic activity
$III.$ Combustion of organic matter
$IV.$ Fossil fuels
Choose the correct option
An ecosystem must have continuous external source of
Given food web contains some missing organisms $A, B, C$ and $D$. Identify these organisms and select the correct answer