Answer:
Because during climbing a flight of stairs our body requires more energy and an increased amount of Carbon Dioxide is produced. to compensate both of these our medulla orders our lungs to breathe faster. In Emphysema extensive lining of alveoli become damaged and hence it can not full fill the demand of the body. hence patient of emphysema becomes short of breath.
Explanation:
Emphysema:
It is the disease in which the patient air sacs becomes damaged due to the thinning of the walls of alveoli. The patient feels short of breath during a tough situation, exercise or during pressure. All those activities which require energy in excessive amount can cause shortness of breath to the emphysema patient.
here are approximately 4,740 species of frogs around the entire world. There are about 90 species of frogs in the United States. Unfortunately, about 120 amphibian species, including frogs, toads and salamanders, have disappeared since 1980.
hope this helps:)sorry if it doesnt
A plane is two dimensional and has infinite length and width. So, it contains infinite lines. Ray is a defined term in geometry. Hence, a plain contains the parallel lines.
Answer:
D
Explanation:
Different DNA, come from the same sperm and egg
