Complex sentence: The Kiwi are very much the opposite of the Andorians; whereas the Andorians are a highly technical society and coolly logical people, the Kiwi are very "down-to-earth" and emotional.
Split into simpler sentences: The Kiwi are very much the opposite of the Andorians. Whereas the Andorians are a highly technical society and coolly logical people, the Kiwi are very "down-to-earth" and emotional.