Which type of physical weathering is caused by the expansion of water

Ageologist determines that a sample of a mineral cant be scratched by a steel nail but can be scratched by a masonry drill bit based on this information the sample mineral has to be softer than

Greenthe fossil record is the history of life recorded byhuman observationgod. climatologists. remains of the past.

Explain the significance of the increased cell specialization of the volvocine line