Fill in the blank with ONE suitable preposition.
1. There's a shortage withofby freshwater in this region.
2. In South Africa, over 50% of the population live withinat poverty.
3. Milian was a fishing village onwithof a population of a few thousand people.
4. Today our planet is home aboutbyto nearly 8 billion people.
5. Malnutrition is responsible aboutforto more than half of children's deaths worldwide.