Used for studying and research things about it. They can test the pinecone.
Answer:
the answer is A opportunity cost
Explanation:
I just took the test on edge 2021
Lev Vygotsky's theory regarding private speech or a child's tendency to talk to themselves during play is most accepted in the research community today. His theory of private speech has been considered as significant to a lot of recent developmental phycologists. <span>Evidence has </span>also <span>supported Vygotsky's theory that private speech provides many </span>advantages in the development of children.
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The answer is the Tigris and the Euphrates rivers. Mesopotamia is known as "the land between 2 rivers" Hope this helps!