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Biology
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Ecology
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Ecology
Easy Questions
Biology
Botany and Branches
Classification of Plant Kingdom
Micro Organism
Taxonomy of Angiosperm
Morphology of Plant
Plant Physiology
Plant Disease
Plant
Branch of Zoology
Plant Tissue
Classification of Animal Kingdom
Human Physiology
Human
Cytology
Animal Tissue
Health, Disease & Nutrition
Genetics
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Ecology
Pollution
Scientist : Their Contribution in Biology
Biodiversity and Wild Life
Biotechnology
Biology miscellaneous
What is not an indirect service of the world's ecosystems ?
Atmospheric gas regulation
Nutrient cycling
Waste treatment
Water supply
Correct Option:
D
NA
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