Select the correct answer from each drop-down menu. blank involves extracting minerals such as coal from Earth’s surface. It harms the environment by releasing radioactive materials, toxic minerals, and blank
into the air. It also produces toxic liquid mixtures called
, which contain pollutants that cause soil erosion and blanks water pollution.

first blank:Open pit mining, river damming and over-farming
second blank:smoke, metallic dust and acid rain
third blank:fertilizers, smog and slurries