Answer:
The correct answer is herd immunity.
Explanation:
Herd immunity is the resistance against a contagious disease provided by the immune individuals which makes the major part of the population to few susceptible individuals in the community.
So as most of the population is immune to the disease therefore that disease is not able to overpass these immune individuals and the susceptible person is protected indirectly from that contagious disease. By vaccinating most of the people against a disease we can gain herd immunity. So the right answer is herd immunity.
Answer: What are the risk factors for cardiovascular disease?
About half of all Americans (47%) have at least 1 of 3 key risk factors for heart disease: high blood pressure, high cholesterol, and smoking. Some risk factors for heart disease cannot be controlled, such as your age or family history.
Signs and symptoms can include:
Chest pain, chest tightness, chest pressure and chest discomfort (angina)
Shortness of breath.
Pain, numbness, weakness or coldness in your legs or arms if the blood vessels in those parts of your body are narrowed.
Pain in the neck, jaw, throat, upper abdomen or back.
What treatment is used for cardiovascular disease?
Since the 1970s, aspirin has also been used to prevent and manage heart disease and stroke. Beta-blockers are one of the most widely prescribed class of drugs to treat hypertension (high blood pressure). They are a mainstay treatment for congestive heart failure.
Explanation:
NOT MY WORDS! BUT I HOPE THIS HELPS!
Answer:
Wood suitable for carpentary and building is known as timber. It is of two types, hardwood (most dicots) and soft wood (gymnosperms and some dicots like Salix; Salmalia and Morus). Heaviest wood is that of Guaiacum officinale but in India, Acacia sundra.
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The answer A.
The pituitary gland release hormones that that activate the adrenal gland.
