Environmental Science
Atmospheric ozone layer which protect us from UV-B and C is getting depleted most by addition of

carbon dioxide
carbon monoxide
chlorofluorocarbon
sulpur dioxide

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Environmental Science
Which among the following is related to the word Mesoderm ?

Binomial system of classification
Forms blood and bone (leads to complex internal organs)
Anatomically advanced animals having all three germ layers
No membrane-bound organelles, no peptidoglycan in cell walls, introns

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