hi I'm Emerald Robinson and then this what is a video we're going to discuss
global warming global warming is defined as a consistent rise in the earth's
average temperature
global warming is not the same thing as and in fact contributes to climate
change the change that occurs in the earth's average weather over an extended
period of time since the last ice age
Earth's average temperature has been increasing very slowly over the last
several thousand years it's only risen by about two degrees fahrenheit but
that's changed over the last century or so during the industrial revolution of
the early eighteen hundreds humans started to burn large amounts of fossil
fuels like coal and oil to power factories and mills
ever since we've used enormous amount of fossil fuels to do things like make
electricity and provide energy for transportation combustion or burning of
these fossil fuels releases carbon dioxide into the Earth's atmosphere are
fossil fuel use has increased the percentage of carbon dioxide in the
Earth's atmosphere enough that it functions as a greenhouse gas greenhouse
gases act like glass in a greenhouse by trapping heat below the atmosphere in
just 100 years the average global temperature has risen by about one point
three degrees Fahrenheit this warming has drastically affected the earth
glaciers and large areas of sea ice has begun to melt rising ocean temperatures
have caused some sea life to search for cooler waters and has decreased the
population of others
scientists also noted an increase in the number and intensity of hurricanes and
tornados over the next 100 years scientists predict the earth temperature
will rise as much as another five degrees Fahrenheit
unless we do something about the human contribution to global warming groups
that study and try to protect our environment are working with scientists
to find solutions for this growing problem