C. How are Bob and Derek getting there? Are they taking the car or the train?
This is the only sentence that is grammatically correct.
Answer:
A. Establishing roads and park facilities.
B. Attempting to protect Yellowstone park.
Explanation:
Yellowstone Park was established in 1872. In this year, the first superintendent of the park was appointed. This was Nathaniel P. Langford. The second superintendent was Philetus W. Norris (1877-1882). These two early superintendents were essential to the sucess of the park. They were responsible for the establishment of roads (which remain as the Grand Loop Road) and basic facilities. They also campaigned against hunters, vandals, squatters and poachers.
Answer:
The people walking along the boardwalk enjoyed the fresh and salty ocean air.
Explanation:
I think this is what you wanted
16. penicillin
17. ecological
18. life story
19. health threat
20. life science
Hope this helped