You are writing a research paper about how cell phones can improve education in the us. your internet search yields the following information: 1. on january 1, japan will begin using 11-digit numbers because cell phones are so popular that they fear running out of 10 digit numbers. 2. as of september 3, 2008, cell signals are more available than ever. there are now 1,947,083 microwave towers and antennas for cell phone use in the united states. 3. in august 2009, juliette lamontangne reports, "in the us, 76% of students ages 12 to 18 have their own cell phone." 4. people use their cell phones to call others when they feel bored or need to kill a few minutes because they didn't plan ahead by bringing some reading material.

3. In August 2009, Juliette La Montangne reports, "In the US, 76% of students ages 12 to 18 have their own cell phone."

Explanation:

for e2020. the answer would be some directions from the mountain range so we can find mt. whitney. to locate which direction is north, you should use a   compass. this would not only find mt. whitney, but also becuase of this long paragraph you would get points because it's not like anyone actually reads your work becuase once they read the first sentence it sounds dumb enough to not read becuase i'm not good at answering this but the answer is compass for your benefit.

for e2020 ; -;

heat from the core of the earth causes convection currents to occur in the mantle. these currents slowly move the crust around.