Which term describes the process by which pollutants are removed from water by natural microbial activity?
A. Biodegradation
B. Filtration
C. Sedimentation
D. Adsorption
Answer: Option A
Solution (By Examveda Team)
Biodegradation is the breakdown of pollutants by microorganisms into less harmful substances.This is a natural water purification mechanism.Related Questions on Environmental Geology and Sustainability
What is the primary goal of environmental geology?
A. Study of rocks only
B. Understanding human impacts on the environment
C. Mining of minerals
D. Construction of buildings
Which of the following is a major cause of soil erosion?
A. Vegetation cover
B. Deforestation
C. Urbanization
D. Irrigation
What does sustainability mean in geological engineering?
A. Using all available resources
B. Maintaining ecological balance while using resources
C. Ignoring environmental impacts
D. Rapid industrial growth
Acid rain primarily results from which of the following?
A. Carbon dioxide and water
B. Sulfur dioxide and nitrogen oxides
C. Methane and oxygen
D. Hydrogen and carbon monoxide

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