- 90% Hydrogen, 10% Nitrogen
- 80%Nitrogen, 20% Hydrogen
- 60% Nitrogen, 40%inert gases
- None
- Electron and Proton
- Two Protons and two Neutrons
- Three protons and three Neutrons
- None
- ethyl alcohol
- glycerol
- glycol
- methyl alcohol
- Viscosity of ink
- Capillary action phenomenon
- Diffusion of ink through the blotting
- Siphon action
- Carotene
- Rhodopsin
- Iodopsin
- Retinene
- Chemotherapy
- Radiation
- Surgery
- Immunotherapy
- Clostridium
- Virus
- Bacteriophage
- Salmonella
- Vint Cerf
- Charles Babbage
- Edison
- Alexander Graham Bell
- the strength of T.V. waves is very limited
- picture cannot be transmitted clearly after a specific distance
- the shape of the earth is spherical
- the air is not a good conductor of light and sound/waves
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