Keystone species areA. A small proportion of total biomass but has a huge impact on community’s organisation and survivalB. A plenty of biomass but low impact on community’s organisationC. A rare species with little impact on biomass and other species in the communityD. A dominant species which has a large proportion of biomass and which affects many other species

Keystone species areA. A small proportion of total biomass but has a h

1.	Keystone species areA. A small proportion of total biomass but has a huge impact on community’s organisation and survivalB. A plenty of biomass but low impact on community’s organisationC. A rare species with little impact on biomass and other species in the communityD. A dominant species which has a large proportion of biomass and which affects many other species
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