Which mineral identification property looks at how a mineral splits along geometric planes determined by its crystal structure?
a) hardness
b) cleavage
c) fracture
d)tenacity

In what for do plants utilize nitrogen? why do they need nitrogen?

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer