Fact 1: Urine is the liquid waste product of the body that is excreted by the urinary system.

Fact 2: Another readily available liquid manure is human urine.

Given the two facts above, answer the question "readily available liquid manure is a what?" with the following options: 
- aqueous solution
 - more abundant
 - share properties
 - competing for resources
 - major threat to health
 - animal transport
 - looseness of dirt or compost
 - product of the body


 

        product of the body 