I think A is the right answer because secondary consumers are herbivores. I am 99.9% sure about this.
Answer: comparing the amount of decayed and undecayed isotopes
Explanation:
The correct answer is proteins.
The oxidative phosphorylation in the eukaryotes takes place within the mitochondria with the help of electron transport chain. The main objective of the electron transport chain is to accumulate enough amount of protons in the intermembrane space so that there will be a concentration gradient which would help in the production of ATP.
The electron transport chain comprises of various molecules, but majorly the proteins, which are situated in the inner membrane of the mitochondria.
They are are in your respiratory system and the are there to help you breath and you forgot avolli