((im clueless pls)) in most ecosystems, nitrogen is primarily stored in living and dead organic matter. this nitrogen must be chemically modified from ammonia (nh3 ) to ammonium salts (nh4+ ) in the soil, so that it may be once again incorporated into plant tissues. this conversion is carried out by bacteria and fungi through the process of
a) decomposition.

b) denitrification.
eliminate

c) leaching.

d) transpiration.

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.

What is a group of organisms that are closely related and share similar characteristics

What substance acts to prevent sudden ph changes in bodily fluids?