Water (H2O) does not sublimate, unlike dry ice. Which of the following is the most reasonable explanation of why this is the case? A. The forces of attraction between water particles are stronger than dry ice.
B. Water particles are wet while carbon dioxide particles are dry.
C. The air surrounding water particles creates a cushion that prevents sublimation.
D. The vapor pressure of water is very low.

If all prokaryotes on earth suddenly vanished, which of the following would be the mostlikely and most direct result? a) the number of organisms on earth would decrease by 10—20%.b) human populations would thrive in the absence of disease.c) bacteriophage numbers would dramatically increase.d) the recycling of nutrients would be greatly reduced, at least initially.e) there would be no more pathogens on earth.