Three groups of students in Mr. Walker's science class were assigned the task of designing an experiment to test
for the solubility of an unknown crystal. Two of the groups want to use volume to measure the amount of crystal
and one group wants to use mass to measure the amount of crystal. Is it better to use volume or mass?
A
Mass of the crystals.
Volume of the crystals.
C)
Either one would be okay.
D)
It depends on the type of crystal.

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?

What terms describes being out of water after being submerged

Abeaker of water was heated and then placed on a bench in the laboratory. the water cooled until it was the same temperature as the air in the laboratory. which of these explains the mechanism by which the water cooled? a. heat energy was transferred from the water to the air. b. water molecules from the water formed warm water currents. c. the water molecules absorbed energy from the molecules in the air. d. the water released radiation until it contained no heat energy.