Earth's magnetic field is important because the magnetic field shields the planet from harmful ? from the sun.
A. heat
B. radiation
C. solar flares
D. solar winds

The answer is D, solar winds. The magnetic field deflects most of the solar winds, which otherwise would’ve chipped away at the ozone layer that protects the Earth from things such as UV rays/radiation.

So, D is your answer.

a. european colonies

the climate of each region is different from one another.