Here are three ways to combine the sentences:
1) <span>Icy winds make the continent seen even colder, blowing across Antarctica throughout the year.
2)</span><span>Icy winds make the continent seen even colder by blowing across Antarctica throughout the year.
3) </span><span>Icy winds make the continent seen even colder because they blow across Antarctica throughout the year.</span><span />
1 is probably C 2 is maybe D 3 is certainly D and thats all I got fam