What is the name of the world's first scientist?​

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

Helium decays to form lithium. which equation correctly describes this decay?

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.