A. The seawater is less dense than the plain water. B. The seawater is denser than the plain water.

C. The plain water and the seawater have equal densities.

D. It is impossible to tell which liquid is denser.

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