Observing nature is great because you can learn so much about the world around you.
Obseving the earth can help you make new discoveries
It depends whether you are writing a fiction book, say for example you a writing a book on the Victorians, it was a fact file, you would have to use events from real life i.e the death of Queen Victoria<span />
Answer:
I believe it is "C".
Explanation:
I am not sure if this is right or not at all, but I have a feeling that it is "C" because both a Willow Tree and a Disease are Nouns.