Explain how stomata on the surface of leaves control the exchange of carbon dioxide and oxygen and limit the loss of water vapor during photosynthesis

What is the next step in muscle contraction after the actin changes shape? (apex)

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.

Are the brightest stars low magnitude or high magnitude?