Answer:
Toothpastes generally contain the following components: Water (20–40%) Abrasives (50%) including aluminum hydroxide, calcium hydrogen phosphates, calcium carbonate, silica and hydroxyapatite. Fluoride (usually 1450 ppm) mainly in the form of sodium fluoride.
Answer:
World War Two ended finally in the summer of nineteen forty-five. Life in the United States began to return to normal. Soldiers began to come home and find peacetime jobs. Industry stopped producing war equipment and began to produce goods that made peacetime life pleasant. The American economy was stronger than ever.
Some major changes began to take place in the American population. Many Americans were not satisfied with their old ways of life.
They wanted something better. And many people were earning enough money to look for a better life.
Millions of them moved out of cities and small towns to buy newly-built homes in the suburbs. Our program today will look at the growth of suburbs and other changes in the American population in the years after World War Two.
I believe that if we had lost our economy would have plummeted, the US would look completely different, and there would be much stricter rules. <span />
Answer:
One of the biggest developments in communication came in 1831 when the electric telegraph was invented.
Explanation:
hope i helped
Answer:
This photograph shows the Orion Nebula, an interstellar cloud in which star systems - and possibly planets - are forming. Our own solar system presumably formed as gravity caused the collapse of a similar large cloud of gas. The piece of cloud that formed our Solar System is known as the solar nebula.
Explanation:
