Answer:
Osteoblasts
Explanation:
Cells that secrete protein fibres in bones are called osteoblasts.
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<span>D. It takes place along an unraveled section of DNA</span>
Back in the 1800's. There were 2 variations of moths. 1 with white and 1 with black. The black colored moths could blend in the with the coal mines to hide from predators.
