The WTO ensures that countries enforce ______ tariffs.

The downturn resulted ______ company layoffs.

Directions: One underlined word or phrase has an error. Correct it. At 7:15 p.m., a zookeeper at the San Diego Zoo was cleaning near the lion exhibit when she suddenly dropped her keys into the enclosure. Security guards were called immediately, but they didn’t come because they napped.

14. What happens when a leaf node is removed?

23. Vertices that are connected by an edge are said to be ___________ to each other.

2. How many edges are there in the graph?

17. What data structure maintains order, and also has fast search, insertion, and deletion?

25. There are two classic ways to traverse a graph: depthfirst search and ____.

19. In a binary tree, if the value that we are searching for is greater than the current node, where will we search next?

7. In a worst-case scenario, what is the efficiency of the Quicksort algorithm?