Putting two north poles or two south poles of two magnets together makes
the magnets push each other apart.
Putting a north pole with a south pole
makes the magnets stick together.
For which of the following could the
magnets serve as a simple model?
A. parallel circuit
B. voltage
C. law of electric charges
D. potential difference

a. by using fur or clothes to trap heat energy near the body

c. establishing proper sleep hygiene

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.