The earth depends upon the sun for its energy. Imagine a day, when the sun would not rise. Write down the consequences for the earth and its inhabitants.

If the sun did not rise for a day, it would have catastrophic consequences for the earth and its inhabitants:

1. The sun is the primary source of energy for all life on earth. The absence of sunlight would cause a rapid drop in temperature, leading to widespread damage to aquatic ecosystems.
2. Without sunlight, photosynthesis will not be possible. The lack of food for plants and herbivores would ultimately lead to the extinction of many species, causing a ripple effect on the food chain.
3. Plants regulate the oxygen and carbon dioxide in the atmosphere. The loss of plants will lead to decrease in oxygen production and affect all living organisms.
4. The sudden and prolonged absence of sunlight would have a profound impact on human society, with panic and chaos as people struggle to adapt to the situation.

Thus, it is clear that the Sun is essential for life on earth.