- Organisms that help maintain the function and diversity ofan ecosystem are cal

Question

- Organisms that help maintain the function and diversity ofan ecosystem are called
    __________________ species.
- A community's list of species is its _______________. Acommunity's number of
    species and individuals within each species isits ____________________.
- Plants that colonize an area such as a harvested, plowed grainfield are termed
   ____________________ species.
- Various types of bacteria and fungi are normal inhabitants of ourepidermis living on
    dead cells and secretions without causingdisease or infection while helping to repel
    colonization of other bacteria and fungi.. Thisrelationship would
    be termed __________________.
- Remora fish attach themselves to sharks by a sucker-like disk ontheir head, and feed
     by grabbing pieces of food left caused bythe tearing manner in which sharks feed. The
     shark is unaware of the presence of theremora. This type of relationship would be
     termed _____________________.

Explanation / Answer

1. keystone organism 2. species richness 3.species diversity 4. pioneer species 5. mutualistic 6. commensalistic

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