A rule which is accepted but not written down in law. For example: Let people get out of the lift before you walk in.
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Culture shock
Experiencing a shock at the way people live in another country (culture).
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Comical
funny
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Congestion
traffic not moving and blocking roads which causes traffic jams. Also, you can have a congested nose which means you can't breathe properly.
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Conserve
Protect and secure something (animal or environment) from destruction or extinction.
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Drab
dull and boring.
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Biodegradable
A substance or object which is capable of being decomposed by bacteria or other living organisms and thereby avoiding pollution.
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Implication
The conclusion that can be drawn from something although it is not clearly stated.
"The implication is that no one person at the bank is responsible"
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Administration
The process or activity of running a business, organization, etc.
"The day-to-day administration of the company"
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Emission
The production and discharge of something, especially gas or radiation.
"The effect on people's health by car emissions."
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Global Warming
A gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by high levels of carbon dioxide.
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Climate change
Changing weather patterns.
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Satellite
An object that orbits the earth and collects and transmits information.
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implementation
to begin something
The implementation of the plan has begun.
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Greenhouse gases
The gases that form a layer in the atmosphere which stops heat leaving the earth and so contributes to global warming.
