1. For me The best invention is Fire
For Diana Trujillo

2. History The Fire
The fire was known to man almost 500,000
years before Christ.
People have been using fire to cook
their food for almost as long as there have
been people on earth.
African people invented on -purpose cooking
fires probable about one million years ago.

3. What is fire?
When two molecules meet under the right
circumstances, they may exchange electrons in
ways that change both molecules into new kinds
of molecules. While they're doing that - reacting
to each other - they may also release some
electrical energy in the form of heat or ligth. This
is what happens whenever there is a fire. The
earliest fires were stars