Why do biologists measure the number of trophies levels in an ecosystem measure the number of trophic levels in an ecosystem?

Answer 1

To check its stability and health

Answer 2

The tropic level of an organism defines where it exists within the food chain. For example: level one would be items like plants and vegetation and level five would be where carnivores and omnivores exist.

Answer 3

Because trophic levels are the bus of ecosytems. They explain why the higher up the food chain you go the more animals that creature has to eat of the level below it. If trophic levels changed then animals might become overpopulated in the ecosystem because the animal above them doesn't need to eat them as much and the animal itself might not have to eat as much of the animal below it and so be able to survive in abundance. Other animals might be eaten too much and driven into extinction because they are needed for eating too much by the animal above them.