the answer is 21<span>% oxygen, </span>
I apologize in advance if this is incorrect but what I was taught is that the correct answer is gather data to design a recovery plan.
The smallest and most exclusive grouping category is species.
Answer: Omnivore
Explanation: A Carnivore eats meat, an Herbivore eats plants, and an Omnivore eats both
I guess that is:
Within the capillaries of the lungs, gases are exchanged by diffusion; O2 diffuses from the alveolus to the bloodstream and CO2 diffuses from the bloodstream to the alveolus.
