Que puedo sobre el efecto del ejercicio la cantidad de carbono

No usar la carro. The question is asking you what you can do to limit your effect on exercising carbon footprint. Not using the car is a good option for that, but if your teacher said something else in class, I would use that.

the first is correct, the second is "la tienda de descuentos" meaning "the discount store", and the third is "ayer" meaning "yesterday".

the former currency of el salvador who honored an american sailor was:

answer: christopher columbus

the 200 (doscientos colones) was the currency that showed a picture of christopher columbus in front of the bill with a ship - this currency ran from 1892-2001, it was then replaced with the u.s. dollar.

i hope this .