Why are carbon dioxide concentrations expected to incease

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.

Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?

When you exhale, air in you lungs moves from the does anyone know the correct answer on apex