What happens to the blood of someone who has mitral regurgitation

How do you name a compound with more than two elements?

Step 1 review the imaginary strand of dna below. note the complementary base pairs. a g c a a t c c g t c t t g g t c g t t a g g c a g a a c c step 2 to begin replicating this strand of dna, draw the two sides of the strand separating. step 3 now, draw the free-floating bases linking up with the separate sides. remember to follow the rules of complementary base pairing. step 4 draw the two resulting dna strands.

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.