Answer:
I go up when the rain comes down. What am I?
I ask no questions, but receive a lot of answers. What am I?
What is easy to spot but hard to find?
I am flora, not fauna. I am foliage, not trees. I am shrubbery, not grass. What am I?
I am a word. I become longer when the third letter is removed.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.