//chem reactions
private void Fuse(Nutrient head, Nutrient tail)
{
head.Decrease();
tail.Decrease();
Nutrient newNutrient = new Nutrient(head.molecule + tail.molecule, 1);
Add(newNutrient);
}
private void Split(Nutrient nutrient, string sString)
{
nutrient.Decrease();
int cutIndex = Random.Range(0, nutrient.subStrings[sString].Count);
Nutrient head = new Nutrient(nutrient.molecule.Substring(0, cutIndex), 1);
Nutrient tail = new Nutrient(nutrient.molecule.Substring(cutIndex), 1);
Add(head);
Add(tail);
}