Determine the best answer to the two questions below. Primary succession occurs when pioneer species move into an area that has no plants. Which organisms are common pioneer species? (1 point) Responses Mosses and lichens that can grow on rocky surfaces Mosses and lichens that can grow on rocky surfaces Grasses and weeds that arrive as seeds carried by the wind and then germinate in rich soil Grasses and weeds that arrive as seeds carried by the wind and then germinate in rich soil Vines and shrubs that help prevent the erosion of shallow soil Vines and shrubs that help prevent the erosion of shallow soil Conifer trees and tall grasses with roots that loosen the soil