The freezing point of a mixture of water and salt is A. higher than that of pure water
B. the same as that of pure water
C. lower than that of pure water
D. none of the above

What are tissues? a groups of tissues that work together b basic units of structure and function c groups of cells that perform the same function d multiple organs that perform a major function

What causes darkening of the skin as melanin production increases

Select all that apply. why are common names not a good reference to a species? common names can be in different languages common names vary with location common names vary with culture common names vary with species color