All of the following are hazardous effects of mining except a. increased contamination of soil and water b. increased air pollution c. decreased loss of topsoil d. decreased biodiversity in nearby ecosystems

Decreased effect of the loss of top soil is an exception because there will be the Heavy loss of top soil.

Explanation:

Due to the Mining, there will be the emission of dust particles and suspend them in the air which affects the quality of the air, as a result, it causes air pollution. Also due to the mining effect, it affects the property of the soil thereby the drainage and seepage of the water which makes the water quality also worst Due to the loss of heavy topsoil losses it directly affects the vegetation of the nearest ecosystem adversely.  

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