Final answer:
Only approximately 10% of the energy from the consumed plants is transferred to and stored in the snake's body, resulting in about 10 calories from the original 1000 calories of plants being held in the snake's body.
Step-by-step explanation:
The question involves understanding the transfer of energy through trophic levels in an ecosystem. In this scenario, we know that the energy of plants in Level 1 is consumed by a rabbit in Level 2, and in turn, the rabbit is consumed by a snake in Level 3. From biological principles, it is understood that only about 10% of the total energy from one trophic level is transferred and stored in the body tissues of an organism at the next level up the food chain. Therefore, if the rabbit consumed 1000 calories of plant material, only about 100 calories are transferred to and stored in the rabbit's body. When the snake consumes the rabbit, only 10% of those 100 calories will be stored in the snake's body, which equals to about 10 calories.