Depends on whether you are an evolutionist or a creationist. I have left the question open for all to answer.
Mmhmm, riiight. Its not just an honest question. You're acting as if that question should cast doubt onto the theory of evolution. What it casts doubt on, is that trying to provide you with an answer wouldn't be a waste of time.
Do you understand anything about evolution? The fact that you asked that question suggests that you don't know much.
The answer can range from about 10 words to about 10,000 words.
Open questions to all aren't really good ways to spark discussion. We need more from you to figure where to come from.