AICE Geography Practice Exam

The term that refers to materials transported in suspension in the air that eventually fall as precipitation is wet deposition. This process involves the transfer of various substances, including pollutants and nutrients, from the atmosphere to the Earth's surface through the medium of precipitation, such as rain, snow, or dew. Wet deposition plays a significant role in the biogeochemical cycles, as it can introduce essential nutrients into ecosystems or carry various contaminants to the ground.

In contrast, dry deposition refers to the settling of particles or gases onto surfaces without the aid of precipitation, while acid precipitation specifically describes rain or snow that has been acidified by atmospheric pollutants like sulfur dioxide and nitrogen oxides. Organic deposition, on the other hand, relates to the accumulation of organic matter, typically referring to biological materials, rather than the transport and falling of materials in precipitation.