nasal cavities (or oral cavity) > pharynx > trachea > primary bronchi (right & left) > secondary bronchi > tertiary bronchi > bronchioles > alveoli (site of gas exchange)
The two forms of oxygen, O2 and O3 is "<span>They have different molecular structures and different properties."</span>
Answer:
protista, fungi, plant, animal
Explanation:
this is the answer
Explanation:
Greenhouse gases are gases in Earth's atmosphere that trap heat. They let sunlight pass through the atmosphere, but they prevent the heat that the sunlight brings from leaving the atmosphere.
