Which of these does not have volume
a. air
b. a lake
c. energy
d. a sponge

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

In what environment would mineral formation caused by high pressures and high temperatures most likely occur?

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves