Indoor air pollution has increased as improvements have been made in . A)
heating and air-conditioning systems
B)
radon-resistant construction techniques
C)
energy conservation in the home
D)
green building construction
E)
all of these choices contribute to indoor air pollution

The genetic code is essentially the same for all organisms. based on this information, one can logically assume which of the following statements to be correct? a. dna was the first genetic material. b. the same codons in different organisms translate into the different amino acids. c. different organisms have different numbers of different types of amino acids. d. a gene from an organism can theoretically be expressed by any other organism. e. all organisms have experienced convergent evolution.