Thank you for the opportunity to help you with your question!
energy comes from the sun. Some organisms directly use this energy from
the sun (producers, such as plants, which use photosynthesis to convert
the sun energy into energy they can use). Other organisms, consumers,
get the energy secondhand (such as rabbits, which get their energy by
eating the plants). Still other organisms get their energy by eating
the animals that ate the plants (such as wolves, which can get their
energy by eating the rabbits). These would be secondary consumers.
Energy is also lost throughout the process in the form of heat given off
by the animals (the energy available decreases with every group)
Please let me know if you need any clarification. I'm always happy to answer your questions.