Answer:
Class II
Explanation:
Angina is a condition in which the person feels the pain in the chest which is caused by the reduced blood flow to the heart, therefore, is considered a symptom of coronary artery disease.
The Canadian cardiovascular society has categorised angina on the basis of the symptoms into four types: Class I to IV.
In the given question, the symptoms of angina shown by the person are the strenuous activity on climbing the stairs after meals or climbing are the symptoms of the Class II angina in which the ordinary activities gets severed.
Thus, Class II is the correct answer.
Answer:
Varicose veins can best be described as veins cannot prevent the backflow of blood.
Explanation:
Varicose veins are a manifestation of venous insufficiency or peripheral vascular insufficiency.
Veins are blood vessels that, unlike arteries, are not able to contract, so they depend on gravity, muscle contractions and a system of valves to be able to carry blood to the heart.
<u>When the venous valves do not work, the blood is not transported properly, backflow occurs and is retained, producing dilation of the vein walls, which is characteristic of varicose veins</u>. In this case, veins cannot prevent the backflow of blood.
The other options are not correct because:
- <em>Varicose veins do not lose their ability to transport blood.
</em>
- <em>Veins cannot be used to transport blood from the heart.
</em>
- <em>Failure to adequately transport waste to the heart does not apply in this case.</em>
Two groups of organisms that help with biodegradation are fungi and bacteria
Omega−3 fatty acids, also called Omega-3 oils, ω−3 fatty acids or n−3 fatty acids, are >>>polyunsaturated fatty acids<<< (PUFAs) characterized by the presence of a double bond, three atoms away from the terminal methyl group in their chemical structure.
Trans fatty acids are unsaturated fatty acids that have at least one double bond in the trans configuration. ... Hydrogenation and deodorization of unsaturated vegetable oils (or occasionally fish oils) high in polyunsaturated fatty acids. During the heating and frying of oils at high temperatures.
pls mark brainliest
Well the correct answer is air pollution ur welcome
