The reason why plants go limp when they don't have water for a while A. There is no actual physical change when plants don't have water.
B. Cells sink in because the salt becomes too concentrated and it draws in the cell walls.
C. The cells sink in a little because the central vacuole has very little water in it and becomes concave.
D. None of these were the correct explanation.

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.