A blood alcohol concentration (BAC) or blood alcohol level (BAL) reflects the amount of alcohol in the body. Food, type and quantity of beverage, weight, sex, and rate of elimination determine the BAC after the consumption of alcohol.
The process of oxygen transfer in the gills of a fish is a good example of the benefits of countercurrent exchange. As oxygen poor blood meets an opposed flow of oxygen rich water, the oxygen begins to diffuse out of the water and into the blood stream.
A pyroclastic flow is essentially an avalanche of ash, rock, and gas that flows down the slopes of a volcano at great speed. Temperatures inside these flows can be well over 1 â¦ ,000 degrees Fahrenheit, which is unsurvivable for any human, plant, or animal. pyroclastic flowFlows that contain high-density mixtures of hot, dry rock fragments and hot gases. sort of spans the volcanic spectrum from pyroclastic material to a lava fl â¦ ow. They flow down the volcano's side at tremendous speeds.