Question

If you like to spend time outdoors working with plants and animals, you have a(n) __.

Answer 1

You have a green thum in other case you like to plant and clean the earth think of earth day you help clean the earth and you plant so earth day is pretty much like having a green thum having a green thum means you like animals a are a kind animal lover and like to plant and clean the earth.  

Answer 2

Green Thumb.
 
Ex. I love gardening! I have such a green thumb!