They are considered so because are the indispensable parts of the nature cycle.Without formation,decay cannot be possible and similarly,formation cannot be possible without decay.In addition to this,THEY ARE IN A CHRONOLOGICAL MANNER SET BY NATURE and that's why cannot be seperated and so together constitute the cycle of nature.
Answer: C) breaking down terminology
Explanation:
Normally a 10× drop for each trophic level, so I'd say 2,000 kilocal.
I think b. Proteins are polymers of amino acids is the correct answer