When a population of organisms at a low trophic (feeding) level becomes depleted, organisms that are at the top of a food chain are more vulnerable to ecological collapse than those that are at the top of a food web. a. Trueb. False

TRUE.

Explanation: A food chain refers to the feeding relationships between species in a biotic community. In a food chain, the series of organisms is dependent on the next as a source of food.

A food web refers to a diagram showing the organisms that eat other organisms in a particular ecosystem, predators being higher in the web than their prey. In a food web, there's an interconnection of food chains and a graphical representation of what-eats-what.

An organism that feeds at the top of a food chain is more vulnerable to ecological collapse because of the depletion of a particular feeding population than one that feeds at the top of a food web.

answer; in the united states the plains include the great plains of the west and the tail grass prairie to the south of the great lakes extending east to the appalachian plateau

the only other powers were germany russia and uk and they were too busy fighting each other wearing each other down   that the us was becoming strong and they were becoming weaker