Geography · Ecology and Environment
निम्नलिखित में से किसने पहली बार 'पारिस्थितिकी' (Ecology) शब्द का प्रयोग किया था?
- 1पी. हैगेट
- 2कार्ल रिटर
- 3अर्न्स्ट हेकेल✓
- 4ई. पी. ओडम
सही उत्तर देखें
अर्न्स्ट हेकेल
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