solar energy
coal
coal
Plants must complete their life cycle to fulfill their true purpose. For plant's life cycle to continue a seedling must live long enough to produce new seeds.
citizens must pay tax..
A balanced water cycle is essential for maintaining ecosystems and supporting life on Earth. If the water cycle is imbalanced, it can lead to issues like droughts, floods, and disruptions in the distribution of water resources. This can have cascading effects on agriculture, wildlife, and human communities.
comes back down to earth as rain, snow, sleet, or hail, this cycle must be repeated
It should be balanced to regulate water. The amount of water should be maintained constant.
I'm not 100% sure, but my guess would be in order to maintain balance in the ecosystem the nutrients must be cycled throughout. In order for all organisms to survive they need each other, which means there must be some sort of cycle in order for the organisms to interact. The Carbon, Water, and Nitrogen cycle are very good examples of important cycles within ecosystems.
Correct Answer is: Living organisms MUST be involved.
reversibility
The cloud must stay warmer than the surrounding air in order to keep growing.
In order for a species to continue existing, it must reproduce and produce offspring. This ensures that the genetic material and traits of the species are passed on to the next generation. Additionally, the species must adapt and survive in its environment by finding food, shelter, and avoiding predators or threats.