Answer: True
Explanation:Concrete ideas are referred as the abstract ideas that don't have the capability of being touched or seen. It is in the form of emotion expression without the use of words. Nonverbal communication is the form of communication that describes the emotion from the body gestures, facial expression, posture, voice tone, eye contact etc. So, they are the best way of representing the concrete ideas.
Answer is Exogamy
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The answer is false. The physical properties of a substance can be observed at any time.
Answer:
The Cherokee had that language. Sequoyah, a Cherokee, invented it in 1821. He got the idea from seeing non-native soldiers reading what he called talking leaves (words on paper.)
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