Amino acids are monomers that join together in complex macromolecules called a. phospholipids b. proteins c. carbohydrates d. polysaccharides

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false

Anthracite is so hard and pure it is also referred to as a renewable resource metamorphic rock hot bituminous coal dirty fuel