. Most people perceive an increase of 10dB as a doubling in volume of a sound. How many times louder would a 70-dB sound appear to be when compared to a 40-dB sound? Explain your answer.

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the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.