This diagram shows a lunar eclipse. during a lunar eclipse, the earth is
a) behind the sun and the moon.
b) in between the sun and the moon.
c) in front of the sun and the moon.
d) next to the sun but not the moon.

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