Which of the following measures the number of atoms or molecules of that specific substance a.) subscripts b.) coefficients c.) numerals d.) descriptors

b because that is how it works

with pass cost = $25

without pass cost = 3x number of days going the the class

phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation