Five-year-old Tammy mistakenly believes that her short, wide glass contains less soda than her brother's tall, narrow glass. Actually, both glasses contain the same amount of soda. This illustrates that Tammy lacks the concept of.

A)conservation.
B)egocentrism. C
)assimilation.
D)object permanence.
E)accommodation.

answer; cattle ranching on the savanna,and forestry in the amazon;

the historians cited in the article all agree with one another about the cause of the civil war. despite coming from different backgrounds and cultures, the historians agree that slavery was the root cause of the civil war. the fact that all these historiansgenerally agree with one another makes their shared viewpoints more reliable and valid, especially because the historians have different backgrounds and all work for the well-respected institutions of howard university, clemson university, and the university of colorado.

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