David Craven B. HL Banks C. Scottish Greenbelt D. Bell College of Technology E. Sean Ince F. Mimi Chakraborty G. The local authorities H. Hallside steelworks
The passage explicitly states that certain deep-burrowing earthworm species possess a high tolerance for heavy metals like lead and zinc, allowing them to thrive where other organisms die.
Yes/No/Not Given: The scientists expected the site to become a forest within two years.
As the worms improve the soil matrix, opportunistic plant roots strike deeper. These roots eventually die and decay, providing sustained food for the expanding earthworm population. This feedback loop represents the transition from a dead industrial wasteland to a self-sustaining, biodiverse ecosystem. Conclusion worms put new life into derelict site reading answers
Derelict industrial sites, or brownfields, present a hostile environment for biological life. Years of manufacturing, mining, or waste disposal leave the ground heavily compacted and devoid of organic matter. Key Characteristics of Derelict Sites
First, they covered the poisoned site with a two-meter layer of mixed materials. This mix included: Partially treated sewage waste.
Researchers turned to bioremediation using earthworms. Earthworms are nature's engineers. They can tolerate surprisingly high levels of certain soil toxins. By introducing specific deep-burrowing species to the derelict sites, scientists initiated a natural renewal process. How the Worms Restore the Site David Craven B
By analyzing this passage, you can see how specific information is embedded in technical writing.
Do you need help with from this same Cambridge volume?
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 Bell College of Technology E
Aeration (The tunneling action of the worms introduces oxygen into compacted dirt).
Scientists introduce millions of special composting worms (often red wigglers, Eisenia fetida ) along with organic matter like manure and cardboard. The worms do three things:
Below are the common questions and verified answers based on the text:
The deep tunnels allow oxygen and water to reach plant roots.