Your roommate is an avid runner. she runs at least 3 miles every day and generally runs 6 to 8 miles
on the weekends. researchers have suggested that people who run are more likely to have free
radicals, which can be damaging to cells. the presence of what substance might to reduce the
damaging effects of free radicals?

the speed increase from w to x due to increased gravity force

the speed decreases from x to y due to decrease in gravity

linnaeus is the father of taxonomy, which is the system of classifying and naming organisms. one of his contributions was the development of a hierarchical system of classification of nature. today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.