a)  Name one way water sources become contaminated in third world countries. 

answer- when people use the bathroom it goes to the river and people drink from rivers.

b) what are the dangers of contaminated water? 

answer- if you drink dirty water you will get very sick and if it is really dirty it can affect you and possibly make you die.

c) Describe ( in your own words) an invention that can save people from drinking contaminated water?

answer - when they go use the bathroom it goes into a pipe that goes into a garbage can, so they can have clean water to bathe in and drink clean water

d) why do you think people from 3rd world countries do not have the inventions?

answer- i think they don't have it because they don't have enough money to afford stuff like this.