The infrence that earth has an outer core and inner core is based on studies of? a) Earthquake wave data
b) glacier core samples
c) recent fossil discoveries
d) celestial observations​

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