1.Describe how a population differs from a community using your own examples.

2.Describe how an ecosystem differs from a community using your own examples.

Please please help. thanks.

2 answers

Since this is not my area of expertise, I searched Google under the key words "population community ecosystem definition" to get these possible sources:

http://www.answers.com/topic/ecosystems-1?cat=health
http://www.anselm.edu/homepage/jpitocch/genbios/ecologybi04.html
http://www.fi.edu/tfi/units/life/habitat/habitat.html
http://www.tierramerica.net/2000/1119/youknow.html

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.

I hope this helps. Thanks for asking.
A population is a group of the same organisms living together in one area

A community is a group of different organisms living together in one area and relying on each other and working together