Archaea are different from bacteria in that archaea
a. have structures that are more similar to bacterial structures.
b. have molecules that are different from eukaryotic molecules.
c. have structures and molecules that are more similar to eukaryotes than bacteria.
d. developed before bacteria.

a lot of people sadly don't know the best way to learn is cheating off of your friends or this amazing thing called google

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question