Developments That Have Affected Population Growth Flashcards
What are all the developments that have affected population growth?
- Increased food production
- Scientific Developments (control of diseases and infection, improvement in sanitation, canned food and refrigeration)
- Improved health care
What is the first reason that the population has increased at such a rapid rate?
Because farmers are able to produce enough food to feed extra people.
What change did people endure that has meant more food is made available, which has led to an increase in population?
The change from hunter-gathering to farming
What development in Europe changed the way people farmed the land? What was the outcome?
New framing methods in Europe during the 1700s changed the way people farmed the land. These methods produced extra food for the growing towns and cities.
Food production methods continued to improve, how has that made farming today?
Farming has become more scientific, today, farms are run more like factories and businesses.
What have scientists developed so plants can produce more food?
Scientists developed ways to change plant seeds so they produced more food.
What have new dams supplied farms with?
New dams supplied farms with plenty of water to irrigate the fields and produce more food.
What do chemical fertilizers do?
Chemical fertilizers make crops grow quicker and produce more food.
How do pesticides help?
Pesticides help to control diseases and pests that kill or eat crops.
How have machines helped farmers?
Machines saved farmers time and resulted in greater food production.
Developments in science have affected populations in a number of ways. Let’s look at how science helped to…
- control diseases and infection
- improve sanitation and access to clean water
- develop canned food and refrigeration
What has science helped us understand about the causes and effects of diseases? How do these discoveries benefit us?
Science has helped us understand what causes certain diseases and how the diseases affect our bodies. This has made it easier to treat and control diseases.
What important scientific developments helped control diseases?
Vaccinations and the discovery of certain medicinal drugs.
What do vaccinations do? What happens when you give children vaccinations?
Vaccinations prevent people from getting certain diseases. Giving children vaccinations means they will not become seriously ill with diseases that may have killed them in the past.
What are some diseases that people can be successfully vaccinated against?
- cholera
- tetanus
- typhoid
- measles
- polio
- yellow fever
- flu
What did the discovery of antibiotics help to prevent?
The discovery of antibiotics helped to prevent the spread of infections in people’s bodies.
What did the use of antiseptics help with?
The use of antiseptics helped control infections and make operations more successful.
What is part of people’s indigenous knowledge?
All communities have knowledge about certain herbs and plants that people use to heal and treat illnesses.
How are many serious diseases spread?
Many serious diseases are spread by people drinking dirty water.
How has science helped to make water safe to drink?
Science has helped people to develop ways of purifying water to make it safe to drink.
How has supplying people with clean water helped?
Supplying people with clean water as helped to reduce death rates, especially among children.
What does the sanitation and the development of better toilets reduce?
Improvements in sanitation and the development of better toilets reduces water pollution and the spread of disease.
What improvements reduce water pollution and the spread of disease?
Improvements in sanitation and the development of better toilets.
How can toilet waste be removed in cities?
Toilet waste can be removed in flushing toilets that use water.
What do improved toilets in rural areas reduce?
The spread of diseases such as diarrhoea, cholera and typhoid.
What has canning and refrigeration improved? How does this affects population growth?
Canning and refrigeration have improved people’s diets. (Decreased death rates as people live longer due to improved health)
What has canning and refrigeration increased? What are the results?
Both canning and refrigeration have increased the variety of foods people eat. As a result, people have become healthier and live longer.
How has canning and refrigeration helped to lower infant mortality rates?
Canning and refrigeration have made foods safer and reduced illnesses spread by food.
How has canning and refrigeration increased life expectancy and lowered death rates across the world?
Better nutrition and more varied diets means that people’s overall health has improved, which has increases life expectancy and lowered death rates across the world.
What are the important types of health care?
Preventative health care and curative health care.
Examples of preventative health care:
- washing hands
- breast-feeding babies
- vaccinations
- education
- using contraception (condoms)
- regular visits to a clinic or doctor
Examples of curative health care?
- use of drugs such as antibiotics
- operations
- a cast for broken bones
- massage and physiotherapy
Which type of health care is more expensive? What does it require?
Curative health care is more expensive than preventative health care and may require trained doctors and nurses.
What can improvements in curative and preventative health care help to increase?
Improvements in curative and preventative health care have helped increase life expectancy and lower death rates.
How does hand washing benefit us?
Hand washing prevents the spread of diseases.
How does breast milk benefit babies?
Breast milk is much better for babies than powdered milk and it builds their immune systems.
How do vaccination benefit us?
Vaccination reduces infant mortality.
How does the use of condoms benefit us?
The use of condoms prevents the spread do sexually transmitted diseases such as HIV.
Benefits of canned food and refrigeration
Improves diets
Increased variety
Long lasting
Transportable
