Question

Why are earthworms important in soils?

• A. Earthworms are segmented which means that they cause more caverns for other bacteria
  and microbes to be present underground
• B. Earthworms produce fluids which enrich the soil aiding for nitrogen to be present for plant
  growth
• C. Earthworms inhibit gaseous exchange killing other bacteria which can be harmful to plants
• D. Earthworms ingest soil and excrete soil which allows for some chemicals to be

Answer 1

The correct option is B Earthworms produce fluids which enrich the soil aiding for nitrogen to be present for plant

growth
Explanation: These burrows create pores through which oxygen and water can enter and carbondioxide can leave the soil. Earthworm casts (their faeces) are also very important in soils and are responsible for some of the fine crumb structure of soils.