To prevent blood flowing back after each heartbeat. They ensure that the blood flows only in one direction (back to the heart).
Table sugar I'm pretty sure
Answer:
B. Whale!
Explanation:
Snail, crawfish, and lily's all live in freshwater.
While D makes no sense water doesn't live anywhere.
Thanks for letting me help!!
Answer:
Type II cells
Explanation:
Type II alveolar cells are the round-shaped or cuboidal epithelial cells. These cells have a free surface with microvilli. The function of the type II alveolar cells is to secrete the alveolar fluid to keep the surface of the cells moist.
A mixture of phospholipids and lipoproteins is present in the alveolar fluid that serves as surfactant and reduces the surface tension of the alveolar fluid. The overall effect of the presence of surfactant in alveolar fluid is to protect the alveoli against collapsing during exhalation.
Answer:
Coronavirus in its own doesn't have an advantage.
I believe that it helps us to prevent other epidemic diseases such as cholera and other diseases that are caused by lack of sanitization.
Since washing hands frequently is the way of preventing coronavirus.
And wearing mask also helps us to prevent other respiratory diseases being transmitted.
