14. Which of the following statements about synthetic materials is true? A. Synthetic materials are never harmful to the environment.
B. Synthetic materials are pure substances found in nature.
C. Synthetic materials have properties that are different from those of the
natural materials used to produce them.
D. Synthetic materials are not different from natural materials.

The human genome project is devoted to mapping the general dna sequence of our species. this could lead to the development of new medicines, as well as the possibility of using gene therapy to treat certain diseases. however, there are some ethical issues surrounding the mapping of individual genomes. one concern is a) that your genes may change over time, making the project useless. b) that insurance companies could discriminate based on genetic make-up. c) that since this has never been done before, we should probably not do it now. d) that sequencing our individual genomes is so expensive, it is a counter-productive strategy.