Well, that concludes another very fine experiment. which word in the sentence is an interjection?

The answer is: well.

An interjection is a word or utterance that expresses in an immediate way a reaction or a feeling, like in this case, the word “well”; as such, it is not a part of the sentence properly speaking. There are many interjections used in English nowadays, and though they are very heterogeneous, the category includes greetings (hey, hi), curses, doubt markers (um, er), and even responses (okay).  

d. the two authors are in awe of nature; their experiences, reveal that time in nature can change people.

explanation:

- free verse.

- " in poetry, one of the best ways to practice technique is to write in. i want all to be unstressed so that “all the clocks” and “in the night” are matching anapests. many forms that sharpen skills are useful in free verse."