The answer is Barchanoid Dunes.
Best of luck,
The Artemis Wolf
Tryptophan self-controls its synthesis. If we have a large amount of tryptophan in the sense that it exceeds, tryptophan would act as a co-repressor which prevents synthesis of more enzymes for its production. Hope this answers the question.
Carbon is an integral part of many biological processes. Living things use carbon throughout their system. Plants need carbon to go through photosynthesis. People give off carbon through cellular respiration. Hope this was somewhat helpful