MCQOPTIONS
Saved Bookmarks
| 1. |
The given graph shows different levels of oxygen in the air at different times in a park. Which point (W, X, Y or Z) on the graph, shows the level of oxygen in the air at night? |
| A. | W |
| B. | X |
| C. | Y |
| D. | Z |
| Answer» D. Z | |