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Paha777 [63]
3 years ago
13

During a visit to a hospital, a child receives the oral polio vaccine. He then returns to his distant village. Sometime later a

polio outbreak occurs in the village, but the child and his siblings, who had not had the vaccine, are spared. What is the explanation for this event?
Biology
1 answer:
dybincka [34]3 years ago
6 0

Answer:

Because the child was vaccinated against this disease, the germs are not able to travel from one person to the other, and the family in this case, is less likely to get the disease. Even his siblings, that didn't get the vaccine, will get some protection from getting sick. This is known as community immunity.

Explanation:

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Answer:

The myogenic heart is the characteristics of vertebrates where continuous rhythmic contraction occurs. The myogenic heart is the intrinsic property of the cardiac muscles. Each contraction of the heart muscle regulates the flow of blood in the form of a pulse or heart rate.

Explanation:

i hope its helps

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2 years ago
The main function of cellular respiration is __________.
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Answer: The main function of Cellular respiration is to convert glucose into energy source (ATP).

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Glucose can not be directly used as energy. By the process of Cellular respiration 1 glucose molecule gives 38 ATP molecules.

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3 years ago
What are the basic building blocks of DNA and RNA
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A nucleotide is the basic building block of nucleic acids.

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Which two of the Sun's layers are often reversed in larger stars?
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</span>
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3 years ago
Essay on life of trees
Alika [10]

Answer:

hi hope this helps

Explanation:

Trees are our best friends because they clean the air we breathe. Likewise, they also clean the water and soil and ultimately make the earth a better place. It is also a fact that people who live near trees are healthier, fit, and happier than people who do not.it is our responsibility to look after our friends who serve us in many ways. Most importantly by saving plants, we are not doing any favor to plants but to ourselves only. Because trees and plants life does not depend on us but our lives depend on them.Trees are important to us in a lot of ways and we cannot ignore their importance. They are important because they give us fresh air to breathe, food to eat and shelter/shade from sunlight and rainfall. Besides this, there are many medicines in the market that are made up of trees extracts. Apart from this, there are plants and trees that have medicinal value.

They bring peacefulness; create a pleasing and relaxing environment. Also, they help in reflecting the harmful rays of the sun and maintaining a balanced temperature. Besides, they also help in water conservation and preventing soil erosion. They also manage the ecosystem and from ancient times several varieties of plants are worshipped.

Trees provide us many benefits some of which we can’t see but they make a huge difference. They help in fighting back the climate changes by absorbing greenhouse gases which are the main cause of climate change.

Moreover, they replenish groundwater and filter the air from harmful pollutants and odors. Besides, they are a great source of food and the king of fruits ‘Mango’ also grow on trees.When a seed of a plant or tree grow it makes the area around it greener. Also, it supports many life forms. Birds make their nests, many reptiles and animals live on it or near it.

Besides, all these many beautiful flowers, food growing on it. Moreover, many parts of trees such as roots, leaves, stem, flower, seeds, are also edible. Most importantly they never ask anything in return for their services and the gifts they give. Trees also keep the balance in the ecosystem and ecology.

To conclude, we can say that trees are very important and beneficial for every life form on earth. Without them, the survival of life on earth will become difficult and after some time every species starts to die because of lack of oxygen on the planet. So, to save our lives and to survive we have to learn the importance of trees and also have to teach our children the importance of trees.

6 0
2 years ago
Read 2 more answers
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