How many amino acids will 15 codons code for

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

What is the farthest destination to date for a human spaceflight mission?

In the respiration-photosynthesis cycle shown above, what are the products of cellular respiration that belong in box 2?