Your answer is: Hydroelectric power is a cheap and renewable source of electricity.
Explanation:
Hydropower is affordable. Hydropower provides low-cost electricity and durability over time compared to other sources of energy. Hope this helped and it's correct :)
The lowlands west of Australia´s eatern mountain range are drained by the Murray-Darling River system, with its main headwaters in the <em>Great Artesian Basin.</em>
