The ultimate source of energy (for most ecosystems) is the sun<span>. The ultimate fate of energy in ecosystems is for it to be lost as heat. Energy and nutrients are passed from organism to organism through the food chain as one organism eats another.</span>
Hi! Number C. Aristotle
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Answer:
Animals are classified as being multicellular whereas protozoans are microscopic single-celled organisms.
Explanation:
Mitochondria should be the answer
