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The mean concentration of copper in the Earth crust is 50 mg/kg/

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13y ago

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Copper turns green when exposed to the environment chemical or physical?

When copper is exposed to the elements, it reacts with oxygen and moisture to form a patina called copper oxide, which gives it a greenish color. This process is known as oxidation and is a natural occurrence with copper.


What part of speech is occurrence?

Occurrence is a noun.


How can occurrence be use in a sentence?

There was an occurrence of panic amongst the victims. An occurrence is like a happening. When something has occurred, there is an occurrence of that something.


How can you ease choking on phlegm at night in a toddler?

If this is a common occurrence, please get the advise from your doctorIf this is a common occurrence, please get the advise from your doctorIf this is a common occurrence, please get the advise from your doctorIf this is a common occurrence, please get the advise from your doctorIf this is a common occurrence, please get the advise from your doctorIf this is a common occurrence, please get the advise from your doctor


What is the correct spelling of occurrence?

That is the correct spelling of "occurrence" (event).


What is the root word of occurrence?

The root word of "occurrence" is "occur."


When the occurrence of one event does not influence the occurrence of the other?

They are independent events.


What is entity occurrence?

An entity occurrence is essentially an instance of an entity. A great example of an entity occurrence is someone's birthdate and other personal records.


Is occurrence spelled correctly?

The word meaning "something which happens" is spelt occurrence.


How do you write occurrence in a sentence?

I was confused by the occurrence of rain every afternoon this week.


How do I use the word occurrence in a sentence?

Rocks are a natural occurrence in the Earth's surface


What are the blue marks on tanalised timber?

The blue marks on tanalised timber are caused by the copper-based preservative treatment used to protect the wood from decay and insects. These marks are a normal occurrence and do not affect the structural integrity or performance of the wood.