In the theory of plate tectonics, what makes up a typical plate that moves across earth's surface?
a.
a section of continental lithosphere only
b. a section of both continental and oceanic lithosphere
o
c. a section of continental or qceanic lithosphere and underlying asthenosphere
d. a surface feature of a continent or a section of ocean floor

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.