Englishfor English speakers
environmental
Adjective
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Environmental protection, education, issues, etc. all relate to the natural world: land, air, water, and living things.
The country needs help to deal with its environmental problems.
Saving the forests makes economic as well as environmental sense.
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Environmental factors, impact, effect, etc. all relate to the area around someone or something.
The disease is caused by a combination of genetic and environmental factors.
impact
Noun
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An impact is the act of one object hitting another.
In tests, the driver was unhurt, even in high-speed impacts.
Many buildings were destroyed as the plane exploded on impact.
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The impact is the effect of an act, statement, change, etc.
The report noted that most teachers feel that IT has made little impact on formal education.
The environmental impact of such increases in efficiency, however, depends on how you generate the power.
impact
Verb
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If something impacts you, it has an effect on you.
It is obvious how bad movies will impact on children.
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If you impact something, you press (or pack) its together.
There is a special tool to impact the road when it is under construction so the base is solid.
classification
Noun
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A classification the system of groups that are based on the characteristics of the group members.
Linnaeus was known for his system of plant classification, which ordered plants according to their sexual parts.
The Library of Congress Classification puts these books together.
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Classification is the process of organizing things into groups based on their characteristics.
The information that was originally on our website was based on an earlier classification.
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A classification is one group of things that have similar characteristics.
The raises are going out mostly to employees in different skill classifications.