Color is

a. the best way to identify a mineral
b. caused by the chemicals in a mineral
c. measured using the mohs color scale
d. not an important property of a mineral

Which of the following statements is true? 1. the mantle of the earth is made of solid nickel and iron. 2. the crust of the earth is made of solid nickel and iron. 3. the inner core is made of solid nickel and iron.

Which type of respiration takes place when there is no oxygen present? a. anaerobic b. mitochondrial c. cellular d. aerobica. anaerobic

This is the nitrogenous base only found in rna