CEFR Level
a segmented worm that lives in soil and helps decompose organic matter
"The gardener was happy to find many earthworms in the soil."
Technologies that are designed to minimize environmental impact and promote sustainability.
"Eco-friendly technologies can mitigate pollution."
Tourism directed toward exotic, often threatened, natural environments.
"Eco-tourism promotes environmental conservation through travel."
relating to the relationships between living organisms and their environment.
"The factory made several ecological improvements to reduce pollution."
The stable state of an ecosystem where all organisms coexist harmoniously.
"Preserving butterflies helps maintain ecological balance."
The ability of an economy to support a defined level of economic production indefinitely.
"Economic sustainability drives long-term growth."
The organized framework for production, distribution, and consumption of goods and services in society.
"Capitalism, socialism, and mixed economies are types of economic systems."
Careful in the use of resources; providing good value or efficiency.
"Driving a hybrid car is economical in the long run."
in a way that relates to economics or is efficient and not wasteful.
"The company is trying to operate more economically this year."
the degree to which something is successful in producing a desired result.
"The effectiveness of the new policy is still being evaluated."
The ability to accomplish a task with minimum wasted effort or resources.
"The new system improved the efficiency of data processing."
in a way that achieves maximum productivity with minimum wasted effort or expense
"She managed to complete the task efficiently within the deadline."
A power tool used for drilling holes in various materials
"He used an electric drill to make holes in the wall for hanging pictures."
the state of having the right to do or obtain something
"Students must meet certain requirements to maintain their eligibility for the scholarship."
The complete removal or destruction of something.
"The elimination of emissions is a priority."
a feeling of self-consciousness, shame, or awkwardness
"Her face turned red with embarrassment after the mistake."