What percentage of the dogs in the previously mentioned Pacific Northwest population had black hair (that is, what percentage of the dogs showed the dominant trait)

characterization of nanoparticles is a critical step in nanomaterial production as it provides information of dimension, morphology, surface charge, distribution and degree of surface functionalization.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

i believe your answer would be c.. : )