Brainliesttt asap! which families of metals are not so reactive, which allows them to exist by themselves in nature? how do you determine the chemical reactivity for metals using the periodic table?

Which of the following will not cause mass extinction? a. drastic change is weather b. geological change c. both a and b d. none of the above

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.

Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?