What is best to determine if species are closely related?
A) They have similar physical traits
B) They have similar genetic make up
C) they live in the same geographic area
D) they are easily stackable

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes