Hey!
Way to go on the first week of the blog. Here are this week's questions. Remember: No Wiki, Yahoo Answers, Ask.com, etc. You must provide the source. Only 1 person can answer each question for points. 1 Question per week.
1. What causes melanomas to turn black?
2. Do steroids build chondrocytes?
3. What causes a headache?
4. Why doesn't red and yellow marrow mix?
5. What causes tears?
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