Answer:
1. A healthy bone creates new cells all the time.
2. He handed a carton of milk to me because strong bones need calcium, phosphorus, and other minerals.
Explanation:
In the first sentence, the mistakes were: improper capitalization, wrong use of the word 'an', a misspelling of the word 'creates', and a lack of a punctuation mark at the end of the sentence.
The second sentence had these mistakes: improper capitalization, improper use of pronouns (turn i to me), slang term used (correct cause to because), commas listed after calcium, phosphorus, and and, and a lack of sentence punctuation.