Why is it that socially marginalized communities face a disproportionate burden of environmental harm?

Watch the video Polluting the Voiceless: https://vimeopro.com/asasoc/insights/video/4300920…. Using the information in the video and your textbook, address the following questions:

1) Why is it that socially marginalized communities face a disproportionate burden of environmental harm?

2) How does this fact affect how environmental solutions should be developed?

3) What is an example of an environmental strategy that takes social inequality into consideration? (Hint: your textbook includes some.)