How can we stop the poverty that leads to homelessness?

Hi I’m in the 7th grade and I picked homeless teens and spirituality because in my neighborhood there is a lot of poverty. My father works at a school where there are a lot of poor teens. One day my father told me about one of the students at his school a 12yr old girl that lives on streets. He notice that there was something weird she had ripped jeans, no jacket, and very skinny. So he brought her food and helped her.

I felt so bad when I heard about her because I heard that people are poor but I never knew that a 12 year old is and shes still young. I was very concerned but happy that my dad was helping her. I hope to learn how do teens survive and how can I help.