What are two advantages of breathing air, compared with obtaining...

Question

What are two advantages of breathing air, compared with obtaining dissolved oxygen from water? What is a comparative disadvantage of breathing air?

Accepted Answer

Hello everyone and welcome to today's video. So today we need to identify which of the following statements describing the benefits of breathing air over water is incorrect. Remember that We're looking for the false statement among our answer choices. Let's begin by answer choice A. We have the air as a higher concentration of oxygen than water. This is actually going to be a correct statement because air has about 21% of oxygen concentration while water has less than one because of this. This answer choice is correct and we're going to cancel it out because we're looking for the incorrect answer choice. Let's move on. We have answer choice. B Next air is less dense as compared to water, making it easier to move across the respiratory surface. This is actually going to be a correct statement as well. Air is a lot lighter. It weights a lot less than water so it is less dense because of this. We're going to be canceling this answer choice out. Then we have answer choice C The diffusion rates of oxygen are lower in air than in water. Well, we know that in air we have a lot more oxygen and we also have that air is a lot lighter because of this. These diffusion rates of oxygen are going to be much higher in the air than in the water. And this answer choice is going to be incorrect. So we're going to highlighted as the final answer to our question. I really hope this video helped you and I hope to see you on the next one

What are two advantages of breathing air, compared with obtaining dissolved oxygen from water? What is a comparative disadvantage of breathing air?

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