Question

Explain and provide and example of how energy flow is represented in food chains, food webs and pyramids. Explain how changing a factor in an ecosystem (especially involving a keystone species) can impact this flow of energy and the ecosystem as a whole: provide an example of this in your answer.

Heterotroph
Autotroph
Producer
Food chain
Consumer

Energy Pyramid
Trophic Level
Food Web
Keystone Species

Answer 1

Well all 3 it would start with a producer,

example:

African Iris- African Killer Bee- Anteater- Spotted Hyena-(when the hyena dies of natural causes since it is an apex predator)- Earthworm

I don't know if this is exactly what you mean, but this is the best example I can with.