What is the original source of almost all the energy in most ecosystems? water sunlight carbohydrates carbon?

Which of the following would be an important part of a multi-step plan to restore the stability of the red-cockaded woodpecker's ecosystem?

How is the national wildlife refuge system similar to the pacific region coastal program? a. both programs are concerned with providing habitats for wildlife b. both programs are primarily concerned with preserving fish species c. both programs have set aside 150 million acres of land d. both programs are under the u.s. fish and wildlife service

Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt