The horizon is always always always always ALWAYS 90˚ above the zenith.
In 1880, coal powered a steam engine attached to the world's first
electric generator. Thomas Edison's plant in New York City provided the
first electric light to Wall Street financiers and the New York Times.Only a year later, the world's first hydroelectric plant went on-line in Appleton, Wisconsin.By the late 1800s, a new form of fuel was catching on: petroleum.With the low-cost automobile and the spread of electricity, our
society's energy use changed forever. Power plants became larger and
larger, until we had massive coal plants and hydroelectric dams. Power
lines extended hundreds of miles between cities, bringing electricity to
rural areas during the Great Depression.(this is just a brief description)
<h3>there are 20 ways,you can help fight human trafficking </h3>
<h2>please mark in brain list </h2>
<h2>i HOPE IT'S HELP </h2>
C. when did the earth form? and what is it made of?
