Invention is something made by a persons's or groups's __________.

Electric Light Bulbs were made in

A light bulb has wires that glow are called

who invented a similar bulb like Thomas Edison

Edison's other two inventions were

A _______ is a medicine against infectious diseases.

The first inventor of vaccines was

who worked for animal vaccines

Edward Jenner developed a vaccine against

Vaccines are made up of

__________ DISEASE IS SPREADING WORLWIDE NOWADAYS

______ travels at a very high speed of 299,792.5 km/hr

Sir Robert Swan and Thomas Edison Opened a company

One of the useful inventions in the history is

A phonograph is a machine that

Thomas Edison invented light bulb in

The bulb of Thomas Edison had a filament made up of

Robert Swan invented a bulb that used__________ as a filament

The vaccine against rabies for animal was made by