¿Como llego Lerdo de Tejada al poder?

I'm hella smart but i dont know that

2pi more meters because you find the circumference which is 6pi and 4pi and subtract it and you get 2pi

It's probably because the earth is actually tilted and is not straight when orbiting the sun. that's why when it's winter here, it's summer in the southern hemisphere. in the wintertime in the northern hemisphere, it's colder here because it's tilted away from the sun and the southern hemisphere is tilted closer to the sun (i believe this is the case anyways)

Global warming is happening at an alarming that there is no way of preventing it from happening because humans contribute to it