What? I don’t understand the question
Answer:
GIve me more information if this question is lacking detail but I don't know what "the excerpt" is.
Explanation:
For something to be groundbreaking, or revolutionary I believe that it should advance humanity in the proper direction. The light bulb for example was a revolutionary invention. The definition of these two terms are as follows: "involving or causing a complete or dramatic change" and "breaking new ground; innovative; pioneering."
Answer:
veterinarians are the only doctors educated to protect the health of both animals and people. They work hard to help animals that are hurt and take them into their care so that they get better quicker. I hope this helps you!
Subsequent is a time later or more recent than.