Surfaces where O2 diffuses into the blood and CO2 diffuses out of the blood. Each lung contains millions of these sacs. The small round alveoli allow for an amazingly large surface area for this gas exchange to take place. ... Therefore, the greater the surface area, the more gas exchange can occur.
Answer:
The diagram is used by biologists to determine the probability of an offspring having a particular genotype.
Explanation:
because um... i passed biology. im on chem now
Animal cell does not have cell wall because they do not need them.
That which exists, a being, a creature, an entity.
