The macro nutrient that adds flavor and satisfies the appetite is FAT.
Fats also have other functions, these include:
It is essential for insulation.
It protects internal organs.
It transports fat soluble vitamins.
It is essential in the synthesis of hormones.
Because pioneer species are the first to return after a disturbance, they are the first stage of succession, and their presence increases the diversity in a region. They are usually a hardy plant, algae or moss that can withstand a hostile environment.
The answer is none of the above