Obtaining Energy by Organisms || Mrs. Biology
Autotrophs gain energy by making food from sunlight or chemicals, while heterotrophs obtain energy by eating other organisms; both release this energy through respiration for life.
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The carbon cycle | Middle school Earth and space science | Khan Academy
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IGCSE Biology (0610) - 0610/22/M/J/20 - May/June Paper 22 2020 - (Extended) || Mrs. Biology
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