Your friend claims that weather predictions are just guesses. What would you say to change your friend's mind? Include at least two pieces of evidence that weather predictions are scientific. Use complete sentences.

According to the passage, which of these is true about gray water systems? a) gray water systems use plants that require less water. eliminate b) gray water systems require the use of less fossil fuels. c) gray water systems reduce the amount of fresh water used. d) gray water systems reduce the amount water used by shower heads.