Idioms and collocations
Environment
Idioms
Nouns
Adjectives
100

A person or thing's weak point.

Achille's heel.

100

The process by which exhaust fumes and emissions act like a blanket around the Earth, allowing the sunlight to penetrate the atmosphere, but trapping the heat.

Greenhouse Effect

100

Suddenly.  Unexpectedly.

Out of the blue.

100

Something which encourages desirable behavior.

Incentive

100

Happening 'on and off.'   Irregular.

Intermittent.  Inconsistent.

200

Illogical.  Seemingly unnatural.

Counter-intuitive.

200

The range of plant and or animal life in a certain area.

Biodiversity.

200

Very nearby or happening soon.

Right around the corner.

200

Something which discourages undesirable behavior.

Deterrent

200

Relating to a city.

Metropolitan.  Urban.

300

Very tall buildings people live in.

High-rise apartment buildings

300

Able to be continued indefinitely.

Sustainable

300

Very rarely.

Once in a blue moon.

300

The trend towards international cooperation in areas such as trade, education, travel and culture.

Globalization

300

Calming.  Relaxing.

Soothing.

400

In a straight line.  A direct path.

As the crow flies.  Beeline.

400

The study of plants

Botany

400

Lacking much in the way of discretionary/disposable income.

On a tight budget.

400

A group of classical musicians that perform together under the direction of a conductor.

Orchestra

400

Lacking energy.

Lethargic.

500

This means the things we do have more value than the things we say.

Actions speak louder than words.  Talk is cheap.  Show me don't tell me.

500

Laws which regulate the amount of pollution vehicles and factories are allowed to release. (2-words)

Emissions standards.

500

Don't leave yourself in a position where there's no going back to where you were before.

Don't burn your bridges.

500

The excitement we get from something that is new or unusual.

Novelty Value.

500

Energizing.  Uplifting.

Invigorating

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