It depends on if you're talking about the secondary colors of light or paint, but the answer here that is logical is B. orange :3
Oxygen because lipids are fats that need oxygen to use long term energy
Molten material is allowed to solidify into the final shape.
Casting defects occur during solidification:
Gas porosity
Shrinkage
Two stages of solidification:
Nucleation
Growth
I can’t refer to anything, so how am I supposed to help :(