9. People should not drink sea water. How does drinking sea water affect the cells in the body?
a. Water flows out of the cells and the cells shrink.
b. Water flows into the cells and the cells expand.
C. The cell membrane prevents water flow and pumps ions in.
d. The cell membrane allows water to flow and pumps ions out.

Which statement is true regarding weathering in dry environments? a) chemical weathering is absent because of a lack of humidity. b) physical weathering is usually more evident than chemical weathering. c) it is impossible to identify the type of weathering that has occurred. d) physical weathering does not play a significant role in dry environments.