Pioneer species can decrease if other species move it out. If the pioneer species in a forest area is a type of bush, that bush might decrease in number as more species come in.
Because all organisms are made up of cells and there are different types of cells which carry different functions.
C. Can produce fertile offspring
The species may be widespread so they do not share the same population, territory or resources. However, if they are the same species, they can produce fertile offspring.
Root Hair. ( I think that is correct not 100% sure)
Distance= 10 meters and displacement = 0
Distance = 10 meters and displacement = 10 meters
Distance = 10 meters and displacement = 1 meter