<span>The sites like Wikipedia
has illustrated an instinct of having people to engage of working together and
cooperate because of their motto and the way they deliver information well and
easily. They were able to provide principles in which they were able to address
that their information are valid and trustworthy. </span>
A dichotomous key is very easy to use because it provides only two choices.
If you need a further explanation let me know!
Hope this helps!
Answer: Made mostly of collagen, bone is living, growing tissue. Collagen is a protein that provides a soft framework, and calcium phosphate is a mineral that adds strength and hardens the framework. This combination of collagen and calcium makes bone strong and flexible enough to withstand stress.