There are 165 major rivers in the world .
The polar ice capes, the change in genetics of certain animal fossils (growing more or less hair, etc. etc.)
La llegada de la corriente del Niño es considerada beneficiosa porque anuncia la temporada anual de lluvias, necesaria para la agricultura y el ciclo biológico del bosque seco ecuatorial.
The Nile river is the longest river in the world, followed by the Amazon river which is the second longest.
