Free points to Henery Bowers!

Which osmotic and ionic strategies must marine teleost fishes employ?

If a robot fixed another robot is it a engineer or doctor?

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