Positrons:
have a positive charge
are similar to electrons
were discovered by carl anderson
all of the above
none of the above

What produces wave a)sound b) heats c)transfer of energy d)vibrations

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa

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.