Jackie and Kim are each holding one end of a rope. Jackie moves her end quickly up and down. The rope moves up and down, as shown below. What are Jackie and Kim modeling when Jackie moves the rope up and down?
A.
a circuit
B.
a magnet
C.
a prism
D.
a wave
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A wave

Explanation: Waves move in that kind of up and down motion, a circuit is a straight line with energy flowing through it, a magnet is a pulling effect and a prism is a shape, not necessarily a motion.

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the organisms are not adapted to live in some communities or habitats.

answer by yourhope:

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human impact on the environment can be seen in the deterioration of the !

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