Hello! Hopefully this helps you :)
<span>A sequence diagram visualizes the exchange of information.</span>
The most likely answer would have to be social sci-fi.
Answer:
1) has / playing / is preparing
2) while I was doing homework, my mother was arriving home
Answer:
The concept of national parks was one of the most popular ideas in The U.S. ever produced. It stemmed from the desire to protect species places for visitors' present and figure enjoyment. Since Yellowstone was designed in 1872, the concept of what constitutes a national park has expanded significantly.