Вставити слова: without, few, Since, most, safe, protect,

Вставити слова: without, few, Since, most, safe, protect, showers, polluted, recycling, used
Water is the world's (1) precious resource. People can survive for quite a long time (2) food but can only live for a (3) days without water. It is very important then that we take care of our rivers, lakes, and streams.
The problem is that while populations keep rising the amount of fresh water in the world stays the same. (4) 1950, water use has tripled. Experts predict that by the year 2025, two thirds of the worlds population will suffer water shortages. There is also the problem of keeping our water (5) to drink. Many of our rivers and lakes are (6) with chemicals and industrial waste from factories.
Luckily, we can all take steps to (7) our water supply from danger. First, we should try not to waste water at home. Turning the tap off when we brush our teeth, fixing leaky pipes and taking (8) instead of baths are all things we can do to help. Factories can stop dumping their waste in rivers by (9) it. Farmers would waste 25% less water if they (10) new technology for watering their fields.