The abundance of a species population within its habitat is called
Niche density
Regional density
Relative density
Absolute density
Edaphic factors are related to
Give differences: Heliophytes and Sciophytes
Which of the following is capable of causing green house effect in the environment
A bird enters the mouth of crocodile and feed on parasitic leeches. The bird gets food and crocodile gets ribs of blood sucking leeches. Both the partners can live independently. Such an association is
Which one of the following words has been used by Prof. R. Misra for ecosystem