Delta is my best guess, hope this helps
The answer to the question is Carbon dioxide
(I'm not sure but i think these are the answers)
composed of one or more cells
contains genetic program
acquires and uses energy
The vertebrate endoskeleton is internal while an arthropod's exoskeleton is not
A phylogenetic tree<span> or evolutionary </span>tree<span> is a branching diagram or "</span>tree<span>" showing the inferred evolutionary relationships among various biological species or other entities—their </span>phylogeny<span>—based upon similarities and differences in their physical or genetic characteristics.</span>
