What elements in the periodic table might combine with oxygen to form magnesium oxide?

This line graph compares the growth of plants that were kept in the sun for different amounts of time.a)  on day 7, the plants kept in the sun for 3 hours were how tall? b)  on day 7, the plants kept in the sun for 6 hours were how tall? c)    on day 10, the plants kept in the sun for 9 hours were how tall? d)  on day 11, the plant that was grown with 1 hour of sunlight was how tall? e)  based on the graph, the plant grows best in what amount of sunlight?

Why does a plastic bottle that is sealed at a high altitude change it’s shape when taken to lower altitude

What is the compound name for the formula [ru(en)2cl2]2+ and [co(en)cl2br]-