What is a keystone species
| A. |
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 |
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| B. |
A common species that has plentary of biomass, yet has a fairly low impact on the communiy's organizat ion |
| C. |
A rare species that has minimal impact on the biomass and on other species in the community |
| D. |
A dominatnt species taht contitutes a large proportion of the biomass and which affects many other species |