Answer;
A. gases or particles present in high enough concentrations in the atmosphere to harm humans, other organisms and structures.
Explanation;
Air pollution is a type of pollution that occurs when harmful or excessive substances such as particulates, gases and biological molecules are introduced into Earth's atmosphere.
The burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power our vehicles is the major cause of air pollution.
After sensing a drop in calcium levels in the body,parathyroid hormone from the parathyroid glands will be secreted in a negative feedback mechanism of homeostasis
first the parathyroid hormone stimulates release of calcium ions from the bone through the process of bone reorption
then the parathyroid hormone will reduce urinary excretion of calcium by increasing its re absorption in the nephron
finally , the parathyroid hormone will increase the rate of vitamin d synthesis in the small intestine to yield more calcium
Answer: vesicular breath sounds is heard on the throat below the larynx,over the sternum and at the triangle of auscultation.
Explanation:
Vesicular breath sounds are soft low pitched and normal sounds that is heard in the periphery of the lungs. It has greater intensity during inspiration phase than expiration phase. This is caused by accumulated fluid or air between the chest wall.
The nurse should teach parents that
the most important influence on the eating habits of early school-aged children
is the example of parents and siblings at mealtimes. While children may be influenced by some few other factors, they are most likely to
be influenced by the example and atmosphere provided by their parents more than
any other thing.
Answer:
True
Explanation:
Because of Pangea, they show evidence of fossils deep underground in different continents