(this is science) viruses are unique among infectious agents because they are
a. microscopic
b. deadly
c. harmless
d. not living

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

Rotenone is an insecticide that is toxic

Most of the fossils found in virginia are in the coastal plain, valley, ridge, and appalachian plateau regions, best suggesting that these geographic provinces a) were once covered by seawater. b) are the oldest parts of virginia. c) have a great deal of karst topography. d) have large amounts of sedimentary rock.