5th Gr Unit B Ch 2 Ecosystems

Match it! Select the correct answer from the pull down...Good luck!

Shows the interactions among many different food chains in a single ecosystem

An organism in a community that must eat to get the energy it needs

When the last individual of a population dies, that kind of organism becomes ______________ (Example: The passenger pigeon)

A population that is likely to die out unless steps are taken to save it is listed as

The way in which the organisms in an ecosystem interact with one another according to what they eat

A population that begins to decline is listed as

A single organism in an environment

When one organism is harmed and the other benefits it is called