Unlock 3 Discovery and invention vocab

A man made river built for boats to travel along, or to take water where it is needed

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something that blocks you so that movement or action is stopped or made more difficult

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a large, usually tall machine used for lifting and moving heavy things

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very important or necessary

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to stop something from happening or to stop someone from doing something

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to have the same behaviour or qualities as something else

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causing a lot of disagreement or argument

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made by humans, not in nature

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sent or accessed by a computer or a similar machine

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a piece of clothing covering all or most of the body that supports the body or a part of it, and is worn, for example, by people with injuries to help them to walk or by soldiers to help them carry heavy equipment

(a)