41.   The first option is to extract water from subsurface permafrost and use that water directly in a nuclear or solar steam rocket.

42.   The heat from the water in the ceramic cup traveled through the material of the cup, making the cup hotter.

43.   The level of the water in the lake was rising fast.

44.   The measures will improve the quality of the water in the river.

45.   The paint on the palette was still moist because he had kept it under water in a pan in the kitchen.

46.   The problem lies in the virtual absence of water in the Martian atmosphere.

47.   The water in Haworth was bad, so many children died from illness.

48.   The water in the aquarium will quickly equal the ambient air temperature.

49.   The water in the lake is so pure you can drink it.

50.   The water in the lake used to freeze most winters, and then it was good for skating.