According to reader, the water cycle has been occurring due to water reservoirs such as ponds, lakes. These are referred as ground water reservoirs.
They have been playing a significant role in water collection and water cycle.
Thus, the options (d), (b) and (c) are incorrect.
According to reader, the water cycle has been occurring due to water reservoirs such as ponds, lakes. These are referred as ground water reservoirs.
Therefore, the correct option is – a. They are the examples of ground water reservoirs.