1. Galaxies seem to be moving away from us which can support Big Bang Theory.
2. The abundance of Helium and Hydrodgen also support the Big Bang theory!
Personlly I do not believe in the big bang theory but if you need more reasons please comment! :-)
I think this slogan meant that land reform will be given to farmers in the agrarian sector. In The Mexican Revolution, Diaz was not able to breach the gap between the rich landowners and poor farmers in Mexico. Because of this, Madero had challenged Diaz through presidential election
The answer would be the cracking of rock caused by the freezing and thawing of water.
One negative consequence could be that the economy can't grow and get better.