Kim4Allensam8illywhi, The Colombian River is the river that flows along the border of Washington and Oregon. <span />
Answer: The answer is C.
Explanation: Soil includes 40-45 percent inorganic matter, 5% organic matter, 25% water, and 25% air. The right combination of air, water, minerals, and organic matter is essential for plant life to thrive. Microorganisms (both dead and alive) and decaying plants make up humus, the organic stuff in soil.
Answer:
Not 100% sure but I think its the Barail Range. This would affect them by the mountain acting almost like a barrier between them. So they didn't have much interaction.
That would be correct. Regions in between the two tropics are considered tropical regions and experience tropical weather.
