The pictures below show the bone structures of three different animals.

the similarity in structure of the bones of these animals suggest:
group of answer choices

the size of the bones is the same

these species share a common ancestor

these species developed at the same time and location

the chemical makeup of these animals is exactly the same

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