Explains what role
does the food
web have on the
ecosystem.

Food web is an important ecological concept. Basically, food web represents feeding relationships within a community (Smith and Smith 2009).

Explanation: In a grazing food chain, energy and nutrients move from plants to the herbivores consuming them, and to the carnivores or omnivores preying upon the herbivores.

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this

the answer to your question is tooth decay.