Example of two biological systems are forests and grassland. These systems are independent from each other as they form a unit but interconnected with each other through ecotone.
Biological systems are principle living systems of the earth it includes forest, grassland, fisheries and croplands.
Even though each form a different set of biological system which differs in their flora, fauna and their interacting medium, they all are connected by the geological processes like energy transfer, nutrient cycling, and water cycle.
Forests are the biological system which has more availability of temperature and precipitation giving rise to dense vegetation. Grasslands have little rainfall as compared to forest hence have lesser vegetation.
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