How does rabbits depend on energy from the sun

Rabbits are called primary consumers, consuming plants, or in this case, grass (yes, they don't just eat carrots. In the wild they eat grass). Grass is a plant, and it depends on photosynthesis to make its own food. To make the food, it requires energy from the sun. To look more on this, look up some stuff about photosynthesis in your school science textbook. Without the sun, there would be no energy that the grass needs for photosynthesis to occur, henceforth, the grass will die. Without the grass (or any other vegetation, for that matter), rabbits will not be able to survive, since their food source diminishes and will disappear quickly. Therefore, the rabbits depend on the sun for the energy that it provides to its food source.

Also without the sun, the rabbits would freeze to death : P.