The answer is true they should have both
Answer:
complement is a system of plasma protiens that can be activated directly by pathogens
Gonads are sex organs that produce gametes. Male gonads are the testes, which produce sperm and male sex hormones. Female gonads are the ovaries, which produce eggs (ova) and female sex hormones.
Most scientists don't used the word law because that implies it is infallible but generally scientific laws and theories are used interchangeably so true.