Biology · Ecology and Environment
'पारिस्थितिकी' (Ecology) शब्द का प्रतिपादन किसने किया था?
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- 2चार्ल्स डार्विन
- 3अर्न्स्ट हेकेल✓
- 4रॉबर्ट व्हिटेकर
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