Answer:
I am a word. I become longer when the third letter is removed.
I am flora not fauna. I am foliage not trees. I am shrubbery not grass.
Skirts for men.
I'm sometimes white but most often I'm black. I take you there but never bring you back.
I am the kind of food monkey likes and people slip on me and fall in cartoons.
When I'm born I fly. When I'm alive I lay. When I'm dead I run.