While conducting random water sampling tests from a nearby estuary you measure higher than normal ammonia levels. you also measure an increase in nitrogen-fixing bacteria and blue green algae in the water. which of the following best explains why this is a good thing?

a. will lead to an increase in marine organisms
b. bacteria and blue-green algae convert ammonia into usable nitrogen
c. will provide evidence that the water is unhealthy
d. ammonia increases the productivity of an ecosystem

Dying the folding patterns of protein molecules can microbiologists better understand cellular processes as well as some diseases, such as alzheimer’s, that are caused by proteins that have misfolded. the folding of these complicated molecules can be simulated on computers, but it takes a lot of processor power and time for even expensive supercomputers to do this. a group of researchers at stanford university developed software that can be used to distribute the processing of data to anyone who is willing to donate time on their idle personal computers. as a result, the researchers have been able to achieve protein-folding simulations that are far better than those other computing methods have done. which statement best describes the work of these researchers? the work is not scientific because the data are not processed in one location. the work is not scientific because the simulations are not reproducible. the researchers applied creativity to solve a problem in running an experiment. the researchers used only well-established scientific techniques.

__can be defined as which velocity changes

The minerals found in bones are deposited by living cells called