Which models represent a mixture of 2 compounds?

Which muscle is responsible for inhalation ?

When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity

The frequency of alleles in a population that is in hardy weinberg equilibrium? a . changes in each successive generation b. is less important than the frequency genotypes c. shows evidence of the process of natural selection d. remains the same over several generations