Atomic number is the same as number of

Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore? a) a different type of sporopollenin b) an internal reservoir of liquid water c) integument(s) d) ability to be dispersed e) waxy cuticle

In a cladogram' when does a group of organisms branch off

What advantages does a pedigree have over a written passage?