Think of or research examples of mutualism, commensalism, and parasitism.

Identify an example of each type of symbiosis. Explain why it is an example of symbiosis.
Explain the relationships of the organisms.
Post each of your examples, your justification for selection, and the explanations of the relationships.

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explanation:

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint