I need to write a 30 line answer for homework. Means one full page of a A4 size notebook. Help me

Please see the sites and subsequent information on the following link:

food chain definition - Google Search (http://www.google.com/search?hl=en&safe=off&q=food+chain+definition)

Please see the sites and subsequent information on the following link:

food chain definition - Google Search (http://www.google.com/search?hl=en&safe=off&q=food+chain+definition)

I searched in Google.. but I want a proper long explanation of food chain in simple english!! That's y I'm here for asking help!!

What is it you don't understand?