TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Electron transport is the final stage of aerobic respiration, when energy from the krebs cycle is transferred to atp.

SOLUTION: What is the final stage of aerobic respiration, when energy from the krebs cycle is transferred to atp?

PROBLEM: Exotic species are also called invasive species because they threaten other species.

SOLUTION: Why are exotic species also called invasive species?

PROBLEM: Organisms that depend on other organisms for food play the role of a consumer in the food chain.

SOLUTION:
Organisms that depend on other organisms for food play what role in the food chain?