- Ultraviolet Waves
- Ultrasonic Waves
- Electromag netic Waves
- Special Retina
- airborne allergens
- water borne allergens
- animal faeces
- bio- weapon
- Heating
- Beating
- Artificial nuclear radioactivit y
- Chemical reaction
- 35 grams
- 55 grams
- 32 grams
- 42 grams
- Democritus
- Bohr
- Rutherford
- Archimedes
- When the air temperatur e is highest
- Just before sunrise
- About midnight
- When the air temperatur e is lowest
- -40 degree
- 40 degree
- -10 degree
- 10 degree
- Oxygen – Carbon dioxide
- Carbon dioxide – Oxygen
- Oxygen – Carbon monoxide
- Carbon monoxide – Oxygen
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