A smaller unit of size is called a microecosystem. For example, a microsystem can be a stone and all the life under it. A macroecosystem might involve a whole ecoregion, with its drainage basin.
A small,er unit of ,size is called a microecosystem. For example, a microsys:tem can be a stone and all the life under. it. A macroecosyst.em might involve a whole ecoregion with its drainage basin.