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प्रश्न
Why are autotrophs considered to be at the first trophic level of all food chains?
एक पंक्ति में उत्तर
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उत्तर
In a food chain, producers (green plants) make up the first trophic level. It's because they use sunlight and nutrients from the soil or water to produce their own sustenance through a process called photosynthesis.
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