How does the magnetosphere support life on earth?

a.
it circulates heat between the poles of the planet.
b.
it shields the planet from harmful particles emitted by the sun.
c.
it provides an innate navigational system to life forms.
d.
it creates ocean and air currents that dissipate heat.

B. It shields the planet from harmful particles emitted by the Sun.

Explanation:

If you are using plato this is the correct option.

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.