What athena have, you do too

You can use it but a little will do
Sometimes I'm up
Sometimes I'm down
You put green living things in me
And when I got shattered
You don't really give a damn

Please don't mislabel your questions :)

Let me be clear lai: just because your science teacher gave it, doesn't mean it is science. usually these have very little educational value, and are essentially "busy" work.

The answer to this riddle is the letter "e."

Explanation:
In the riddle, it says "What Athena have, you do too." Athena is a reference to Greek mythology, where Athena was the goddess of wisdom. "E" is the first letter of the word "wisdom."

The second line, "You can use it but a little will do," suggests that "e" is a vowel and is commonly used in the English language.

The lines "Sometimes I'm up, Sometimes I'm down" refer to the positions of the letter "e" in different words. For example, in words like "bed" or "pet," the letter "e" is in an "up" position, while in words like "ground" or "end," it is in a "down" position.

The line "You put green living things in me" alludes to how the letter "e" is in words like "tree" or "fern," which are associated with the color green and are living things.

Finally, the last line, "And when I got shattered, You don't really give a damn," is a play on words. It suggests that when the letter "e" is removed from a word, it might change the word's meaning, but people don't really care or notice.