It would be "Sé Bueno" if thats what your looking for Eres bueno = you are good ser bueno = to be good seas bueno , I really don't know but I it's not the answer
The Northern hemisphere consists of about 90% of the earth's land area. The Southern hemisphere consists of about 90% of sea. North has winter. South has summer.
At the time of completing a sentence, it is important to identify the person and the time in which they are being raised, that way it is facilitated to us how we can conjugate the verb within the sentence.