I have always used black heavy plastic for landscaping. You will not have grass or weeds growing into the plastic like you do other material. When you want to freshen up a job, or remove or change your rock or mulch, it is easy to pick it all up from the plastic. Then you can add new or clean your rock or mulch and put it back on the plastic. 26 years and still using plastic.
Pros:
1. Moisture Retention
2. Weed Control
3. Winter Protection
Cons:
1. Requires Reapplication
2. Compaction
no it does not rust but if you rub it on your arm you will rust.
There is a list here http://www.plasticsurgeons.com/resources/plastic-surgery-overview/pros-and-cons-plastic-surgery.htm
there are no pros but cons its poisoneus no different the regular tap water and is some times more cleaner
pros:cheap,light,durable cons:not biodergrable,release harmful gases
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pros are + and cons are-
pros: goodness cons: badness
PROS CONS ----------------------------------------------------- Pros: Entertaining Cons: Mental conditions can be caused, Adicition, Expensive.
Cons? What Cons?
what are the pros and cons of being an architect