¿qué tipo de límite presenta Argentina en la mayor parte de la zona de contacto con Brasil? ¿Por qué?

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.

Ibelieve it is the 2nd answer, create gardens on all rooftops. let me know if this .

Answer decreased soil salinity;

Answer after wwii, communist countries in eastern europe formed the warsaw pack, a military alliance, and comecon, an economic alliance;