I believe the answer would be A.
The flow is larynx, trachea, bronchi, bronchioles, alveoli
There is a lot of calories in fats that can be a good help and can be used for growth, fats are high energy molecules that help in growing organism. Fats produces carbon dioxide, water, and ATP when metabolism. The sugars and or starch is useful in the same method, they provide calories necessary for a seed or baby animal to grow. The sugars used in glycolysis and then the products of glycolysis used in the citric acid cycle, and the starch can be cleaved into more manageable sugars.
Answer:
the second one
Explanation: IN the text it literally states it explicitly.
the answer to your question is the amount of time and the effect it has on each material as well as the fact that the nitrogen cannot change it is an unchangeable variable whereas everything else the time, the substance of the subject, the possible formation of nodules can change without changing the identity of the experiment itself otherwise, you have a dependent variable. I hope this helps :-)
Is this a multiple choice question?