write two facts about geography in interior plains?

You'll find many facts here.

http://en.wikipedia.org/wiki/Interior_Plains

Where? Canada? US? or ???

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Sure! Here are two facts about geography in the interior plains:

1. Topography: The interior plains are characterized by a relatively flat and low-lying landscape. They are typically located between mountain ranges or plateaus and have gentle slopes and flat surfaces. This topography makes the interior plains ideal for agricultural activities, as the land is more easily accessible for farming and the soil is often fertile.

2. River Systems: The interior plains are often crisscrossed by major river systems. These rivers can originate from nearby mountains or plateaus and flow across the plains, eventually draining into larger bodies of water such as lakes or oceans. These river systems play a crucial role in the region's hydrology, shaping the landscape, providing water for irrigation and transportation, as well as supporting diverse ecosystems.