composting site layer and county layer(number of cattle) are two total different layers.
To study the relationship between composting site and number of cattle,
You will need to somehow related these two different layers.
DataRefence Tool is right for this job.
https://transparentgov.net:3200/googlemaps5012/default?layer_id=0&layer=Composting¢er_lat=44.84137154768033¢er_long=-87.46396154348086¢er_zoom=7&url=https%3A%2F%2Fgeodata.epa.gov%2Farcgis%2Frest%2Fservices%2FAgSTAR%2FWBJ_Waste_Facilities%2FMapServer&org=EPA+-+Various+layers%2C%C2%A0%C2%A0&overlayType=overlayType_image&panto=0&select_folder=295&select_layer=2&url2=https%3A%2F%2Fgeodata.epa.gov%2Farcgis%2Frest%2Fservices%2FAgSTAR%2FUSDA_MarketPotential%2FMapServer&layer_id2=2
https://transparentgov.net/json2tree/esri/server/folder.html?url=https%3A%2F%2Fgeodata.epa.gov%2Farcgis%2Frest%2Fservices&org=EPA+-+Various+layers%2C%C2%A0%C2%A0&_center_lat=37.84877875029065&_center_long=-122.07572943940639&_center_zoom=16&select_folder=296&select_layer=0