A scientist who studies the interactions between organisms and their environment.

पर्यारणविज्ञानी

English Usage: The ecologist conducted research on the impact of pollution on local wildlife.

Hindi Usage: पर्यारणविज्ञानी ने स्थानीय वन्यजीवों पर प्रदूषण के प्रभाव पर अनुसंधान किया।