What determines how closely related 2 species are?

In what layer of the sun is energy transfers between atoms

Lola needs to sign 6 invitations. using stopwatch that measures time to tenths of a second, it takes lola 5.3 seconds to sign her full name. going by the accuracy of the stopwatch, which is the most accurate determination for the number of minutes lola needs to sign all 96 invitations

Adistinctive characteristic of mammals that is not observed in other vertebrates is