You want to compare the evolutionary relationships between four species of birds, which of the following would be most useful? question 1 options:
a) nesting behaviors
b) dna sequences
c)color of feathers
d) patterns of migration

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