Sam is no longer confused when she can't see her rattle; she knows it is still there. What skill has Sam developed?
A)Object permanence
B)Representational thought
C)Conservation
D)Telegraphic speech

24-karat gold is considered to be pure gold. 18-karat gold is considered to be about 75% gold. what is 18-karat gold considered a mixture rather than a pure substance? a) it has a variable composition of other elements and minerals. b) its color is different than pure gold. c) the gold atoms are not arranged in a repeating pattern. d) it can be melted and transformed into a different substance.

Que actos del pueblo simbolizaron el inicio de la revolucion y la caida de la monarquia?

Which institution includes radio televisions and movies