Answer:
On Humans.
People exposed to high enough levels of
certain air pollutants may experience:
Irritation of the eyes, nose, and throat
Wheezing, coughing, chest tightness, and breathing difficulties
Worsening of existing lung and heart problems, such as asthma
Increased risk of heart attack
<u>On </u><u>Environment</u>
<em>Acid rain </em>
<em>Eutrophication</em>
<em>Haze</em>
They produce sperm and they secrete hormones (testosterone)
Storing dry foods should at least be six inches or
15 centimeters off the floor and no less than 18 inches away from exterior
walls to decrease the likelihoods of condensation transported on by temperature
alterations between the vessel and the surface touching which it rests, other
than to ease scrubbing and pest control actions.
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.
