Consider the substancesN2O5, H2, CH4, H2O, KCI, and O2. Is it possible to tell just from the symbols and the numbers which are elements and which are compounds? Explain?

Which of the following can be reduced by the use of renewable energy sources? a. social costs b. economic costs c. environmental costs d. all of the above select the best answer from the choices provided a b c d

How will you manage your time to accomplish the necessary tasks both on the job and at home?

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.