<span>In the highway transportation system, pedestrians are people who walk, so they would not be called drivers. Therefore the answer is not low risk drivers or youthful drivers. The phrase "beginning users" refers to people who are just in the early stages of learning something or using something. In general, this phrase would not necessarily be used to describe pedestrians, drivers, or cyclists. The only remaining answer is "roadway users", which makes perfect sense. Pedestrians, drivers, and cyclists are people who are using the roadway, therefore they are roadway users.</span>
Answer:
The name was given to it because it's a huge stretch of unbroken sand desert that has bested kings, adventurers, and nomads for thousands of years.
I pretty sure it was a system to deliver messages.
Answer:
Surfactant increases airflow. It has this effect on airflow because it reduces resistance to lung inflation. Airflow increased as predicted.
Explanation:
Pulmonary surfactant is a complex mixture of lipids and proteins secreted by the Type II alveolar cells. The major component of surfactant, dipalmitoyl-phosphatidylcholine (DPPC), is an amphiphatic phospholipid. The main function of the pulmonary surfactant is to reduce the surface tension at the air/liquid interface in the lungs by forming lining layer between the aqueous airway liquid and the inspired air. prevents alveolar and airway collapse at end-expiration and thus allows cyclic ventilation of the lungs. It decreases surface tension in the alveoli making it easier for the alveoli to increase surface area for gas exchange. By lowering alveolar surface tension, pulmonary surfactant provides two important benefits:
(1) it increases pulmonary compliance, reducing the work of inflating the lungs; and
(2) it reduces the lungs’ tendency to recoil, so they do not collapse as readily.
Answer:
the answer is B which is
Explanation:
The Iroquois traded ocean resources, while the Algonquin did not.
