An association of individuals of different species living in the same habitat and having functional interactions is
ecosystem
population
ecological niche
biotic community.
Which is the correct order of ecological hierarchy?
The niche of a population is defined as
Define population and community.
Smallest unit of ecology is
$A$ : Population ecology is a link of ecology to population genetics and evolution.
$R$ : Natural selection operates at population level to evolve the desired traits.