<span>The answer is option B
Nowadays, water scarcity is a problem for 1.2 billion people, almost one fifth of the world's population (7 billion). According to reports from United Nations Development Programme, in 2025,
this problem will reach 1.8 billion suffering total water scarcity, and two-thirds of the world's population might be living under water-stressed conditions.</span>
On the other side, the grass is greener
1 tiene que correr a la competición
2 tiene que comer más salida
