You will find a list of ingredients on almost all food packages unless:

select one:
a. it has been unaltered or the package is too small.
b. there are no "healthy ingredients".
c. the manufacturer does not want to list additives.
d. it is diet or imitation.

The answer is A. It has been unaltered or the package is too small. A package gives special protection, tampering resistance, and special physical, chemical, or biological needs. It protects the products and stops them and the energy, water, and materials used to make them from going to waste. In the case of food and drink items

You can literally find this on google of each science career and search up what type of training you need and how many years in school