Besides utilizing tools, you can also employ certain techniques to make your visualizations more interactive. Animations, for instance, can be used to demonstrate changes over time, highlight trends or outliers, or compare scenarios. A line chart could be used to show the evolution of a variable, a bubble chart to display the movement of a group, or a bar chart to illustrate the difference between two values. Hover can be employed to showcase additional information or details when the user moves the cursor over a data point, a legend, or a label - such as using a tooltip to show the exact value, a label to show the category, or a popup to display an image or link. Click can be used to trigger an action or response when the user clicks on a data point, button, or menu - like utilizing a filter to show or hide a subset of data, a slider to adjust a parameter, or a dropdown to select an option. Finally, brush can be used to select a range of data by dragging the mouse over a chart or map - for example, using a histogram to filter data by continuous variable, map for geographic region filtering, and scatter plot for filtering data by combination of variables.