Spores may be dispersed by moving water, wind, or other organisms, and plastic and other mulches offer a barrier to spore dispersal. Given these facts, plastic and other mulches offer a barrier to what among the following options:
- contamination
 - Animal survival
 - erosion
 - Deposition.
 - spores moving
 - bacteria
 - environment
 - high temperature


 

     spores moving    