migration

mortality

immigration

mutation

nudity

natality

mortality

population

A rare species that has minimal impact on the biomass and on other species in the community

A dominant species that constitutes a large proportion of biomass, which affected many other species

A common species that has plenty of biomass, yet has a fairly low impact on the community?s organization

A species which makes up only a small proportion of the total biomass of a community, yet has a huge impact on the community?s organization and survival

orderly process of community change till stability

gradual, convergent directional and continuous process

series of biotic communities that appear gradually in a barren area

all of these

Place where it lives

Geographical area that it cover

Set of condition that it interacts

Set of conditions and resources it uses

Grassland

Coral leef

Mangroves

Rain forest