Sources are things that tell us about history. Some examples of sources are below:
A picture
A film
A diary
A newspaper
An interview
A letter or note
A book
An artifact
The answer choices are a table of contents, an interview, a photograph, and a written letter.
From this list, we can say that a <u>table of contents</u> is not a source. It can't really tell us much about history. Therefore, the correct answer is A. A table of contents
Yes, there is a lot of work is needed in order to make the environment suitable for the animals to live on this planet. Human activities produces a lot of pollution that makes this world unfavourable place for animals so recovering of the original environment consumes a lot of work and time also so in my opinion more work should be needed in order to secure the environment for a long time.