Answer:
The correct answer would be D.Alveolar sacs are surrounded by thin capillaries where gases can be exchanged.
Alveoli are tiny sacs which form the site of gas exchange in the lungs.
The features of alveoli which help in gas exchange are:
- They increase the surface area in the lungs thus, more space is available for gas exchange.
- They have very thin walls, as thin as the thickness of a single cell only.
- They are surrounded by a bunch of thin capillaries which exchange gases with alveoli.
True, hope this helped you out :)
The most specific would be felis catus. That is the name of the species in biology, and there are no more taxonomic divides after species.
Answer:
the well be wind cell are used in isolated locations
Answer:
the answer is B = all living things are made of the same elements
