The trash that you throw away ends up in landfills, which can be expensive to construct and maintain.
(The trash; throw away; you) (The trash that you throw away; ends up; in landfills) (The trash that you throw away; can be; expensive to construct and maintain)
The trash The trash that you throw away The trash that you throw away
throw away ends up can be
you
in landfills
expensive to construct and maintain