The answer is theory development.
That's it because if you were a scientist, you couldn't collect data if you were forming a theory. I mean, how would you create a theory if you haven't even collected any data?!?!
That's my answer for ya!
The symptoms of the disease/virus itself.
Answer:
the plant uses photosythisis to create its own food it absorbs water and sunlight through its roots and chloropyhll, it uses carbon dioxide to convert its food while releasing oxygen.
Explanation: