How can we contribute to preserving the environment.
pls help it is exam
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Using the 3 Rs

reuse, reduce and recycle (explain further)

stop littering, especially places like the ocean.

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the direction of the magnetic field produced by an electric current will change when the direction of the electric current changes. for example : if a current is flowing in a straight length of wire, the magnetic field is described by a concentric circle (using right-hand rule).