Yes. A lot of people are deprived of clean and purified drinking water. Americans we use up to 2 gallons of water to do a simple task such as brushing our teeth. This amount of 2 gallons is how much water someone in Africa can use in one whole day. I hope this helps you understand why wasting water is a very real thing
This type would be debris and grit pollutants. Sewage treatment plants separate this type of pollutants from the water and clean the water making it available for further use. It is basically recycling of water, so you should not drop it into the toilet, but if you do it will be cleaned eventually and removed from the water.
The rivers will go both north and sounth
You see, we are more likely to find tropical rainforest and jungles on a hot and sunny location like on the equator. In fact, desert doesnt always have to be hot at all, for instance, the antarctica. Deserts are formed on locations with different climates and less precipitation. And unlike the locations on the equator, which receives high amount of rainfalls, deserts receive way too little, thus, affecting the vegetation and growth in the area.