Not all earthworms serve the same ecological purpose. Scientists generally categorize them into three distinct types, each playing a specific role in land reclamation:
Researchers at Bell College of Technology found that the worms not only speed up soil recomposition but also aerate the soil and add nitrogen, making the ground suitable for long‑term plant growth. To further clean the land, – including willow and alder – were planted; these absorb contaminants and are later harvested for energy, making the project self‑financing. Indeed, the cost of traditional bioremediation could have exceeded £30 million .
Feature: Breaks down compacted subsoil layers and mixes organic matter downward. →right arrow worms put new life into derelict site reading answers
Understanding this vocabulary is essential for navigating the text:
The capacity of an organism to survive in unfavorable environmental conditions. Not all earthworms serve the same ecological purpose
Explanation: The passage opens by describing the original state of the reading site, which was heavily polluted by previous industrial activity. Organic matter
– The project is cited as a prime example of this environmental principle. 3. Questions 10–13: True/False/Not Given Indeed, the cost of traditional bioremediation could have
– The initial state of the derelict site before the project began.
Choose the correct letter: What happens to the heavy metals inside the worm?