Explanation:
If I had a magic wand and could change three things about the world I would: stop world hunger, solve global warming, and eliminate all polution. All three of these things are major issues in the world and I believe fixing and eliminating them could change the world for the better. I also see no negative effect from these actions.
By stopping world hunger people who are starved and less fortunate wouldn't have to suffer from starvation any longer. Though another large issue is global warming. Its causing temperatures to raise and icebergs to melt dramatically, so by solving this issue it preserves the planet longer. This then leads to the final magic act: eliminating pollution. I would do this because pollution is harmful to the planet and raises risk for more disease. This harms both plant and animal lives alike. So by changing these 3 things with a single magic wand the world could truly become a better planet and place to inhabit.