Examlex
Which of the following is the weakest reducing agent?
Leaching
The process by which soluble substances are washed out from soil or wastes by the action of flowing water.
Meteoroid Impacts
Collisions between a meteoroid (space rock) and Earth, which can cause craters and have significant geological and biological effects.
Weathering
The breakdown and alteration of rocks and minerals at the Earth's surface through physical, chemical, or biological processes.
Open-Pit Mine
A type of surface mining operation where rocks or minerals are extracted from a large open pit or borrow.
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