Answer:
This is more of a "What do you think" question I believe. Which means that my answer may not be what you think, but I hope this maybe gets you thinking?
Unequal access to basic services leaves other's out, making it unfair. A lot of times this can be connected to background, race, religion, etc. These combined can lead to social injustice, because it's not fair that not everyone gets at least the basics.
This may not be how your teacher wants to format it, and this is a very basic summary. I hope this helps!
Step-by-step explanation: