Answer:
Class A
Explanation:
Because they're combustible materials
2 the YY is yellow.
the Yy is yellow
yy is blue
SS is square
Ss is square
ss is round
Proteins, which are the building blocks from which the structures of living organisms are constructed (this includes almost all enzymes, which catalyse organic chemical reactions) Nucleic acids, which carry genetic information. Carbohydrates, which store energy in a form that can be used by living cells.
D is the answer! I just had this question and it was right !
