I believe the answer to this question is a food web.
Food Web definition: "<span>a series of organisms related by predator-prey and consumer-resource interactions; the entirety of interrelated food chains in an ecological community."
Source: </span>http://www.dictionary.com/browse/food-web
Can you elaborate on that please?
Answer: Option A) Gram positive cocci
Explanation:
Anaerobic Gram positive cocci such as Lactobacillus sp., and Clostridium sp.
are found in the intestines of humans where are they help in the digestion of materials like cellulose and creating gas passed out as flatulence