Answer:
the standard unit used to measure mass is gram.
How it is supposed to work is that provided the footnotes were inserted correctly using the Reference tab and then click on insert footnote, then these notes will also be moved with the text. As long as the selection includes the footnote reference in the text, moving the text will also move notes as well.
Answer:
The answer is: c. Adding external CSS is a good practice for various reasons, including code organization.
Explanation:
External CSS improves maintainability in code.
Internal CSS has precedence over external CSS, it means that internal will overwrite external CSS, but abuse of internal CSS often makes hard to maintain HTML code on a large website.
Furthermore, it is much easier to modify one CSS(external) file that can impact multiple web pages than go into every HTML page and modify your styles per page. Many sites have hundred or more pages, go through each one wouldn't be productive.
