- Sulphur dioxide
- Carbon dioxide
- Nitrogen dioxide
- CFC’s
- Vitamin D
- Vitamin A
- Vitamin B-12
- None of the above
- Dobson
- Dalton
- Cuolomb
- none
- Pyrex glass
- jena glass
- Flintglass
- Soft glass
- 700 sec
- 8hrs 20 mins
- 8 mins 20 sec
- 8 mins
- 150 million years
- 250 million years
- 300 millon years
- 350 millon years
- Einstein
- Newton
- Gahleo
- Hubble
- Phosphavinyl chloride
- Phosphor vanadiu chloride
- Polyvinyl chloride
- Polyvinyl carbobate
- 5,778 Kelvin
- 6,778 Kelvin
- 7,778 Kelvin
- 9,778 Kelvin
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