Answer:
Lipase doesn't react at 1.5 while pepsin at 1.5t is at its most active stage
Explanation:
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