Se realizó un levantamiento topográfico con una red de apoyo de 4 estacionesconsecutivasE1,E2,E3 y E4, donde la estación inicial es E1. Determinar la dirección del alineamiento E1E2, si se conoce que el ángulo menor formado por los alineamientos E2E1 y E2E3 es de 80°, y los rumbos de los alineamientos E3E2 y E4E3 son S 25° O y N 60° O respectivamente. Asimismo, la dirección E2E1 se encuentra ubicada en elIV cuadrante.

This is all you, but i can give you some topics that you could try. if it rained when you want to do something outdoors, it 'limits' that human activity. maybe you want to do an experiment that goes throughout the whole year and you have to have above freezing the entire year. this 'limits' your activity. i thought of those just off of the top of my head. something that gets to me that might be getting to you is you are thinking too hard about what to do. think simply, and if it is too simple, then bump it up just a little bit.

There is a great difference between the windward and leeward side of a mountain. windward and leeward sides are opposites.

No, because you are more likely to see volcanic mountains where magma is rising along the mid-ocean ridge spreading to the center.