Answer:
The alveolar walls and capillary walls share a membrane. That's how close they're getting. This allows oxygen and carbon dioxide to readily pass from the respiratory system to the circulation. Oxygen molecules bind to red blood cells as they return to the heart.
I would say D. poor spatial awareness because cattle can be easily startled by sudden movements or objects coming into their vision.
<span>Vertical zonation shows that not only do different biomes occur at different latitudes, but also at different altitudes.
There are different ecological areas (biomes) at different heights on the Earth, not just different geological areas.
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