The tone starts starts out lonely, like the author says, and turns to cheerful, as the author sees the daffodils.
The words "Fluttering" and "dancing" helped you determine that the author is happy, and the words "wandering" and "lonely" help you determine the beginning tone.
Hope this helps ya
At the beginning because it goes at the introductiin part at the top
A.
Explanation:
There are several reasons that Carbon-12 was chosen as the standard for determining the relative mass of other atoms.
- Its abundance on earth
- Carbon-12 is a very stable isotope atom
- Its has the same number of neutrons and protons hence more ideal to use for a precise calculation of <em>amu</em> (atomic mass unit) -
The mass of an atom are based on the ¹/12 mass of Carbon-12.