Composition and structure of communities constantly change in response the changing environmental conditions. These changes lead finally to a community that is in near equilibrium with the environment and that is called a.......
Seral community
Pioneer community
Hydrarch community
Climax community
Relative to roots, the shoots are massive in plants of
$A$ : Successional process starts only in those areas, where no living organisms ever existed.
$R$ : These areas are not supported by physical environmental conditions.
Alpine forests occur at altitude
Plants near seashore is an example of