Hello you are not surprised because you are familiar with the phenomenon of--referred pain.
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Answer:
cyanobacteria
cyanobacteria is The answer is tiny organisms known as cyanobacteria, or blue-green algae. These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen
Explanation:
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Each time an organism is consumed, 90% of the energy is lost as heat. that leaves only 10% for the carnivore