18. Explain why food webs and energy pyramids show the flow of energy but the cycling of matter.(1 point)Responses
1.The Sun continually replenishes the Earth's matter, but the Earth has a constant amount of energy
2.The Earth has a constant amount of energy and matter.
3.The Sun continually replenishes the Earth's energy, but the Earth has a constant amount of matter.
4.The Sun continually replenishes the Earth's energy and matter.