Well...
There are various things you can do to help our environment. The easiest 3 things are reduce, reuse, & recycle.
Try not to use a lot of water excessively. Also, try to be mindful of what you throw in the trash. Lastly, you can save electricity and turn off any un-neccesary lights in your house, etc.
Hope this is useful:)
Have a great rest of ur day:}