Answer:
36 1/6
Explanation:
434÷12=36 1/6
population density is number of trees in one square meter
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.
decreasing the availability of natural fuels
There Are 4 Valence Electrons So do the one with 4 valence electrons
Answer:
In mitochandia and cytoplasm
Explanation:
mitochandira is the eukaryotic cell structure where cellular respiration occure.
cytoplasm is jelly like matterial found between plasma membrane and nuclear envelople it has organelles for performing respiration.
