Question

how can line graphs help scientists? by showing the proportions of different parts of a whole by displaying the average of the data by comparing data across unrelated categories by revealing patterns and helping to make predictions

Explanation:

Line graphs are useful for visualizing trends over time or relationships between variables. They can show how data changes and help identify patterns, which in turn can be used to make predictions. Pie - charts show proportions of a whole, and other methods are used for displaying averages or comparing across unrelated categories.

Answer:

By revealing patterns and helping to make predictions