Food chains show energy transfer between organisms. the size of a food chain can vary, yet there is a limit to the number of levels that a food chain can reach. why is there a limit to the number of levels that a food chain can reach?

D. Energy is lost at each trophic level

Hope I helped!

the answer is:

carbon dioxide

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.