What is an undesirable change in physical, chemical, or biological characteristics of air, land, water, or soil due to the introduction of contaminants called?
A. Succession
B. Pollution
C. Conservation
D. Extinction
Answer:B
What is an undesirable change in physical, chemical, or biological characteristics of air, land, water, or soil due to the introduction of contaminants called?
A. Succession B. Pollution C. Conservation D. Extinction