Answer:
Regulation, Control, Coordination, Growth, Nutrient, Nutrition, Homeotasis
Petiole, hopefully this helps you
I am not entirely sure what you mean by "responding variable" but I'm going to guess it was the vinegar since it has been used as a perservative for years.
Hope that helps in some way.
Answer:
it is the process by which carbon dioxide is removed from the atmosphere, is achieved through various chemical and biological processes