One-degree fahrenheit may seem like an insignificant amount to many, but it can be enough to cause a change. temperatures on earth have increased one-degree fahrenheit over the last century. this seemingly small change on earth has made a big impact, though, when it comes to global warming. global warming on earth causes changes in rainfall patterns around the world, resulting in droughts in some areas and flooding in others. global warming on earth also causes the sea level to rise. as glaciers in the arctic melt, the oceans absorb their extra water, which causes changes in coastal flooding. it can also seriously affect freshwater biomes as salty water moves inland on earth. global warming can also be tied to health problems related to heat stress and air pollution. so, as you can see, one-degree fahrenheit may not seem like a big amount to many, but it sure can affect the world we live in

which repeated phrase is most powerful and why?
a.) global warming because it emphasizes that the entire earth is warming, not just one area
b.)one degree fahrenheit because this small amount usually does not have much of an impact, and in this case it does.
c.) causes changes because it reiterates how many global changes are occurring.
-answer asap for a and 20 points < 33