The passage explains how scientists used worms (specifically Eisenia fetida ) to restore contaminated, derelict industrial land (brownfield sites). Worms accelerate soil remediation by breaking down pollutants, aerating soil, and working alongside bacteria.
In 1990, local landscaping firm HL Banks and the developer Scottish Greenbelt teamed up to create a cheaper, smarter solution. Instead of using massive machines to dig up and wash the toxic soil, they decided to let nature do the work.
: Restoring or cleaning polluted land.
Traditional remediation relies on expensive engineering. Soil is either excavated and moved to landfills, or buried under thick layers of clean, imported topsoil. While effective in the short term, this approach does not heal the underlying ecological functions of the land. Earthworms as Ecosystem Engineers worms put new life into derelict site reading answers
"Reading answers" refers to interpreting biological and soil indicators to assess site condition and restoration progress. Key indicators linked to earthworm activity include:
Charles Darwin once noted that the earthworm is one of the most important creatures in the history of the world. In the context of land reclamation, earthworms act as natural "ecosystem engineers." They alter the physical, chemical, and biological properties of the soil simply through their daily habits of burrowing and feeding. 1. Mechanical Aeration and Tunnelling
The transformation was almost magical. By burrowing deep, the worms aerated the compacted ground and introduced vital . Their "castings" (waste) acted as a potent natural fertiliser, containing up to five times more nitrogen and seven times more phosphorus than the surrounding soil. The passage explains how scientists used worms (specifically
Academic reading tests typically use three question formats for this passage: (or Yes/No/Not Given), Summary Completion , and Matching Features . 1. True / False / Not Given (or Yes / No / Not Given)
Below are the common questions and verified answers based on the text:
These "specially raised hermaphrodites" accelerate soil regeneration by "chewing" through the topping layer. They aerate the soil and add essential nitrogen, creating a structure capable of sustaining long-term plant growth. Accelerating Nature Instead of using massive machines to dig up
To turn this harsh, messy mixture into healthy soil, they brought in a secret weapon: . How Worms Rebuilt the Soil
Vermicomposting offers several benefits, including:
Bare industrial ground lacks the essential nutrients required for plant growth. Earthworms bridge the gap between dead organic matter and available plant food.