Answer: From Piaget's theory of cognitive development, The concept of Object Permanence.
Explanation:Object Permanence, for the baby means that he is starting to understand that things can disappear although they aren't gone forever.
Since Jonathan's mom left him he began to cry because he did not want her to leave although he knows she won't be gone forever.
D, all of the above. The scientific method goes through the process of making a hypothesis, testing it, and reviewing the results. It goes through a full lab report.
Answer:
Tornado Alley is a nickname given to an area in the southern plains of the central United States that consistently experiences a high frequency of tornadoes each year.
A. Voluntary trade occurs only when all participating nations expect to gain.
Answer: a way for animals to avoid competition
Explanation:
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