essie71 essie71

22-01-2017
Health

contestada

Which is a type of oxygen that forms a protective layer miles above the earth?

A.
fossil fuels

B.
smog

C.
pollution

D.
ozone

Respuesta :

szostakamanda szostakamanda

22-01-2017

The correct answer is D, The Ozone layer

Answer Link

bossninja bossninja

22-01-2017

The ozone layer of courese

Answer Link

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