What happens when individuals or nations choose one thing over another?
O They cannot change their minds.
O They give up their freedom.
O They give up the next best option
O none of the above

How does food concentration affect yeast activity

The variation among individuals, on which natural selection acts

Waste water from industries and domestic sources can be treated by chlorination or ultraviolet radiation. there are pros and cons to using either chlorine or uv radiation to kill harmful microorganisms. what is one reason chlorination would be preferred over ultraviolet radiation? a) chlorine only eliminates visible impurities and is ineffective against microorganisms. b) chlorine not only kills bacteria but provides a residual effect on returning microorganisms. c) uv radiation can be used only to treat drinking water and is ineffective in treating waste water. d) ultraviolet radiation is more effective