A single litterbag with poplar leaf litter has been placed on the forest floor at Coweeta. This bag was harvested and arthropods extracted from it. The sample contains mainly springtails, oribatid mites, predatory mesostigmatid mites, pseudoscorpions, and small spiders. At which stage of decomposition is the leaf litter in this litterbag when it was harvested? a. Fresh
b. Early
c. Mid
d. Late

Which table best shows the impacts resulting from human activity? impact of human activities human activity impact use of manure and other organic fertilizers reduction in population of birds use of pesticides in farms increase in bird population in nearby wetlands impact of human activities human activity impact use of manure and other organic fertilizers reduction in animal population use of pesticides in farms increase in population of native insects and bugs impact of human activities human activity impact use of plastic decrease in marine animal population removal of beach grass increase in pollution of ocean impact of human activities human activity impact use of plastic increase in fish population removal of beach grass decrease in sand erosion