Living things on earth belong to which sphere?
a.
atmosphere
b.
lithosphere
c.
magnetosphere
d.
biosphere

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration?

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.

How have the greenhouse gasses increased from the year 2000 to 2018