Describe the differences between the natural
vegetation west of the cascades and the vegetation
east of the crest of the cascades.

What is the reason for the “scramble for africa”?

Based on the information in the graph, what can you conclude about humans in the world in general?

Good scientists always report their observations and results truthfully. this is especially important when a scientist's results go against previous ideas or predictions. coming up with inventive ways to solve problems or produce new things