Gold Is Removed from the Rock That Contains It by a Series

question 1

Multiple Choice

Gold is removed from the rock that contains it by a series of leaching operations that all involve the use of

• A)suluric acid
• B)nitric acid
• C)arsenic
• D)highly toxic cyanide salts
• E)mercury

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Definitions:

Protoimperative

A form of early child communication aimed at expressing needs or wants, such as reaching to be picked up.

Protodeclarative

A phase in early child language development where infants use gestures or vocalizations to draw attention to objects or events.

Overextension

a language development error where a child uses a word too broadly, for objects that are not included in the word's meaning.

Pragmatics

The aspect of language concerned with the use of language in different contexts and the conventions that govern its use in communication.