We refer to the following as the food chain
Large number of animals near a source of food
Transfer of food energy from the green plants through a series of consumer organisms
Large number of human beings forming a human chain near a source of food
None of these
In an ecosystem
Why is the rate of assimilation of energy at the herbivore level called secondary productivity ?
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
Choose incorrect option w.r.t. amount of living material present in different trophic levels at a given time
The number of trophic levels in an ecosystem are limited. Comment.