Assignment: Use at least 6 A4 size sheets for the assignment and draw the diagrams or pictures on the plane side of the sheets. Choice any one topic for the assignment from the following topics.
1) Activities involved in agriculture practice. (You have to give detail description of each step).
OR
2) Covid-19 (You have to write- microorganism responsible for the disease, symptoms, its origin, mode of transmission, risk of death, how does it effected human life around the world). OR
3) Plastic (You have to write- what is plastic, it's types, it's properties, its effect on environment).
Answers
covid-19
Coronaviruses are a group of viruses belonging to the family of Coronaviridae, which infect both animals and humans. Human coronaviruses can cause mild disease similar to a common cold, while others cause more severe disease (such as MERS - Middle East Respiratory Syndrome and SARS – Severe Acute Respiratory Syndrome). A new coronavirus that previously has not been identified in humans emerged in Wuhan, China in December 2019.
signs and symptoms
Signs and symptoms include respiratory symptoms and include fever, cough and shortness of breath. In more severe cases, infection can cause pneumonia, severe acute respiratory syndrome and sometimes death. Standard recommendations to prevent the spread of COVID-19 include frequent cleaning of hands using alcohol-based hand rub or soap and water; covering the nose and mouth with a flexed elbow or disposable tissue when coughing and sneezing; and avoiding close contact with anyone that has a fever and cough. WHO is working closely with global experts, governments and partners to rapidly expand scientific knowledge on this new virus and to provide timely advice on measures to protect people’s health and prevent the spread of this outbreak.
Several of the early cases had visited Huanan Seafood Wholesale Market and so the virus is thought to have a zoonotic origin. The virus that caused the outbreak is known as SARS‐CoV‐2, a newly discovered virus closely related to bat coronaviruses, pangolin coronaviruses, and SARS-CoV.
The scientific consensus is that COVID-19 has a natural origin. The probable bat-to-human infection may have been among people processing bat carcasses and guano in the production of traditional Chinese medicines.
The earliest known person with symptoms was later discovered to have fallen ill on 1 December 2019, and that person did not have visible connections with the later wet market cluster. Of the early cluster of cases reported that month, two-thirds were found to have a link with the market.
Mode of transmission
The primary and most important mode of transmission for COVID-19 is through close contact from person-to-person. Based on data from lab studies on COVID-19 and what we know about similar respiratory diseases, it may be possible that a person can get COVID-19 by touching a surface or object that has the virus on it and then touching their own mouth, nose, or possibly their eyes, but this isn’t thought to be the main way the virus spreads
risk of death
People of all ages can be infected by the new coronavirus (2019-nCoV). Older people, and people with pre-existing medical conditions (such as asthma, diabetes, heart disease) appear to be more vulnerable to becoming severely ill with the virus.
WHO advises people of all ages to take steps to protect themselves from the virus, for example by following good hand hygiene and good respiratory hygiene.
effects on human life
This, in turn, affects many people, typically the least well-paid and those self-employed or working in informal environments in the gig economy or in part-time work with zero-hours contracts. Some governments have announced economic measures to safeguard jobs, guarantee wages and support the self-employed, but there is a lack of clarity in many countries about how these measures will be implemented and how people will manage a loss of income in the short-term.
Behind these statistics lie the human costs of the pandemic, from the deaths of friends and family to the physical effects of infection and the mental trauma and fear faced by almost everyone. Not knowing how this pandemic will play out affects our economic, physical and mental well-being against a backdrop of a world that, for many, is increasingly anxious, unhappy and lonely.
Fear of the unknown can often lead to feelings of panic, for example when people feel they are being denied life-saving protection or treatment or that they may run out of necessities, which can lead to panic buying.