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Is Human Overpopulation really a problem?

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Sophia Stafford

on 4 February 2014

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Transcript of Is Human Overpopulation really a problem?

Is Human Overpopulation


a Problem?

What is overpopulation?
Overpopulation occurs when a population of a species exceeds the carrying capacity of its ecological niche. Overpopulation is a function of the number of individuals compared to the relevant resources, such as the water and essential nutrients they need to survive. It can result from an increase in births, a decline in mortality rates, an increase in immigration, or an unsustainable biome and depletion of resources. (wikipedia)
How many are there?
Global Sustainability
In 2013, Niger had the highest total fertility rate, of 7-8 children
By Allison, Emily and Sophia
WOW! So Interesting
Do we have enough food?
Population control in other countries/continents
Our Steps
This is a world map showing the total fertility rate in other countries, according to the CIA World Factbook's 2013 data.
How do other countries control their population?
Will this effect us later?
Canada's GTP per capita is 52,218.99 USD (2012) which is one of the highest in the world
South America
North America
Proper education and medication for women
South America
Trying to help women through family planning groups
The population is declining due to the STI, AIDS
Population brought down after 'The Black Death' now it's a "population paradox
China - One child policy:
Youth family planning groups
is the cause of contaminants being released into the environment and causing serious change.






HoW wiLL poLLutiOn aFFECt us LaTEr?

strengthens greenhouse effect
damages ozone layer
acidic rain
In water pollution:

WOW! So Interesting
WOW! So Interesting
At least 80% of people in the world
live on less than $10 a day
Pollution Fact
Since trees absorb the carbon dioxide, cutting them down causes the carbon dioxide to pollute the atmosphere and cause global warming. Trees also give us the oxygen we need to breathe.
We live here!
WOW! So Interesting
Pollution Fact
Pollution Fact
Big source = human waste (2 million tons per day)
Natural cause is dirt - washes away quick but manmade types tend to remain
causes many illnesses
less developed nations struggle to find clean water
chemical pollutants don't cause direct illness

Did you know that diseases obtained from polluted water account for more than 60% of childhood deaths worldwide?
Also, every eight seconds a child dies from water-related disease.
Are we next?
I think we will be next if we continue polluting our planet because we have already contaminated our air and water, and started the process of global warming doing so. In my opinion, eventually, earth will become so contaminated that it won’t be able to sustain our lives anymore and the whole human race will die off.

Just one chlorine atom can destroy more than 100,000 ozone molecules.
In 1987, more than 100 countries signed an agreement caled the Montreal Protocol to limit how much of these harmful chemicals could be made and released.
CFCs - 'miracle chemicals'
nontoxic, cheap, last long time
troposphere to stratosphere
sun's rays break up molecules, releases chlorine atoms, causes a chemical reaction
keeps on destroying ozone molecules
WOW! So Interesting
The average person needs about 2 gallons (7.5 L) of air per minute when lying down, 4 gallons (15 L) per minute when reading a book, and 12 gallons (45 L) per minute or more when running
dirty and unhealthy
toxins enter your body
breaks down cellular structures
causes chronic infections, lung cancer, asthma
If we continue to do our share of pollution...

Step 1: Think of a problem and put it into an open-ended question

Step 2: Divide the question into different “research branches” to help get the answer we need

Step 3: Gather information based off of the different sections so that we will be able to put our research together and answer the question

Step 4: Gather the information together and think of a final “answer” based on how our question affects our research

Step 5: Create a presentation of the information we have gathered

Step 6: Add visuals to help our research look more appealing and/or helpful to prove a point

Reasons Species Get Extinct:
- Forces of Nature
- Specie Sickness
- Man-Made Pollution
- Human “Sport” (Hunting/ Shooting
Are we the reason species are extinct?
Animal Extinction
How much the average person uses water inside the home
In 2008 the three most commonly cited causes of homelessness for people and families in America were a lack of affordable housing (72%) , poverty (52%), and unemployment (44%).

Number hungry in Africa grew (nearly 1 in 4 are hungry)
estimated that nearly one in eight suffered from undernourishment in 2010-2012
almost all live in developing countries
World Hunger
Number of undernourished in Asia and Pacific decreased nearly 30%
Latin American and the Carribbean also made progress
Rate of progress has slowed recently
Children and Hunger
WOW! So Interesting
Children that are malnourished suffer up to 160 days of illness a year. Poor nutrition plays a role in at least half of the 10.9 million child deaths per year
Global Sustainability Fact
WOW! So Interesting
Also, malnourishment can also begin even before birth, with a malnourished mother. Under-nutrition among pregnant women in developing countries lead to 1 in 6 of infants being born with low birth weight. This causes a risk of learning disabilities, poor health, blindness, and premature death.
Global Sustainability Fact
magnifies eff
of every disease
n also be caused by disease
Main Causes of Hunger
Poverty - people go hungry from not enough money to buy food.
Hunger is also a cause of poverty, and well, hunger (kind of like a vicious circle)
Climate change is yet another current and future cause of poverty and hunger
How is global warming affecting the world?
Does the world produce enough food for everyone?
world agriculture produces enough to provide everyone with at least 2720 kilocalories of food per day
principal issues that cause people to not get enough food are...
(the root cause of lack of even food distribution are poverty, inefficiency in markets, unsustainable prices and lack of infrastructure
In air pollution...
Pollution Fact
How it will affect the world:
Connection to Deforestation
Nearly 500 million people don't have access to safe drinking water.
industrial water pollution - highly poisonous metals get into water systems and affect our health
Clean Water Act of 1972 - helped to clean up factories and other sources of point pollution
connection to thermal pollution and global warming - damage to ocean life (e.g. coral reefs) which is home to 1/4 of ocean wildlife, so it will greatly affect the food chain
cuyahoga River in Cleveland, Ohio - used as a sewer and burst into flames due to the chemicals/waste and caught national attention

WOW! So Interesting
Pesticides have been found in almost 90% of water and fish samples taken by the U.S. Geological Survey
Pollution Fact
Global Warming
Earth has been getting warmer, especially rapidly in the past few decades, and this is called global warming
Why is it happening? What are the causes?
Greenhouse effect
Certain gases in the atmosphere act like the glass of a greenhouse
Sunlight warms the ground, some heat bounces back to space but much remains trapped near the ground by carbon dioxide, water vapor, etc.
Humans are the main cause of global warming
Cutting down trees, driving cars, burning vast amounts of coal and oil
WOW! So Interesting
Did you know that nineteen of the twenty hottest years EVER have happened since 1980?
Global Sustainability Fact
WOW! So Interesting
There is 30% more carbon dioxide in the air than there was 150 years ago
Global Sustainability Fact
We burn gigantic amounts of coal, oil, and natural gas to generate energy, and cars, trucks, chimneys from factories etc. make tons of carbon dioxide
Produced from wood, methane, and nitrous oxide faster than oceans and forests can absorb it
Contributing our carbon dioxide
All the Ice
The warming of the ice greatly affects the feeding patterns, behaviours, and even the survival of polar bears, seals, walruses, and whales.
Heated Oceans
3 degrees Celsius warmer = 3 foot rise in sea levels
Gulf Coast, east coast cities from Boston to Miami, Nile Delta, Bangladesh
The Antarctic ice cap holds 90% of the world's ice and about 70% of its fresh water
20 foot rise (floods coastal areas)
Changing Climate Effects
Things that can happen because of climate change and global warming:
Powerful storms
Greater rainfall in tropical areas
Even less rainfall in dry regions
Dry soil and terrible droughts
Increased wildfires
Bigger and more frequent fires
Releases more carbon dioxide and causes even worse global warming
What to do?
use fans instead of air conditioners
use energy-saving fluorescent lightbulbs
turn off electric appliances and lights
install double-paned windows, extra insulation, and solar panels
take shorter showers
plant a tree
use reusable bags
walking, biking, using public transportation
Global Warming
WOW! So Interesting
Every year we add 26 gigatons of carbon dioxide to the atmosphere. However, each year, the oceans can only soak up about one quarter of those gigatons.
Global Sustainability Fact
Even if we can stop global warming, it will still take a long time for Earth to recover.
Permafrost is...
Arctic, Antarctica, half of Canada and half of Russia
Affects nature of the ground - trees topple and buildings crack
Release of methane
Carbon Footprints
Carbon footprint is...
Produced by fuel burned for our uses (electricity)
The size of your footprint depends on where you live and how you live
In the 14th century the plague (aka The Black Death) reduced the world population from an estimated 450 million down to 350–375 million.
WOW! So Interesting
Population Fact
WOW! So Interesting
On average, each person in the world is responsible for putting 4.4 tons of carbon dioxide into the air each year.
Global Sustainability Fact
- An estimated 50 percent of all endangered species live in the rainforest.

- Freshwater ecosystems are home to more than 100,000 known species of plants and animals, and are now one of the most endangered habitats in the world.

- A species is declared extinct after many years of not being spotted.

- A species is defined as endangered or threatened when it is compared against five factors: - Damage to or destruction of its habitat - Overuse of the species for educational, recreational, or entertainment purposes - Disease or predation of the species - Lack of protection - Natural or manmade hazards to the continued life of the species

- An endangered specie is one whose numbers are so small that it is at risk of extinction.
- A threatened species is one that is vulnerable of becoming endangered in the near future.
Species Protection Organizations Facts
- The Endangered Species Act of 1973 (ESA) protects registered endangered species by removing them from the “take” list, which makes it unlawful for a person to shoot, harm, capture, trap, or any things of that sort to the specie.

- The World Wildlife Organization focuses on saving certain species that help sustain other species.

After looking at all the information we have come to the conclusion that...
FOOD = we are not overpopulated, it is more that we don't evenly distribute food to some people
GLOBAL WARMING + POLLUTION = is caused mainly by overpopulation - the more we populate the earth, the more harmful chemicals we release
POPULATION= It was difficult to come to a conclusion about our population, because the main reason people feel we are overpopulated is because we are not evenly distributed around the world
POVERTY/HOMELESSNESS= poverty is usually caused by being born into it, and they can't afford the education to get a job to work out of it, so it's like a cycle.
EXTINCTION = extinction is caused by overpopulation because the more people there are, the more animals get killed by humans
wow! so Interesing
Obesity kills 300,000 people a year
Critically EndangeredSpecies
The Amur Leopard, the Black Rhino, the Cross River Gorilla, the Hawksbill Turtle, the South China Tiger, and the Sumatran Elephant
OVERALL... we conclude that
Overpopulation could be a problem

Population in Other countries:
http://en.wikipedia.org/wiki/Human_population_control (http://en.wikipedia.org/wiki/Aristotle)
WOW! So Interesting
Despite China's one child policy sex-selected abortion, abandonment, and infanticide are illegal in China.
In 2008, 47 percent of the population of sub-Saharan Africa lived on $1.25 a day or less.
As of 2011, 18 out of the 20 poorest countries in the world were in Africa.
The indigenous peasants are the poorest people. The poverty is mainly caused due to unequal distribution of wealth.
Water Pollution by Sean Price
Keeping Water Clean by Courtney Farrell
Water Pollution and Health by Cordelia Strange
Clean Air by Andrew Bridges
Air Pollution by Darren Sechrist
Protecting Earth’s Air Quality by Valerie Rapp

http://www.youtube.com/watch?v=rAsZNditf- A
Global Sustainability:
Global Warming by Seymour Simon
Global Warming by Chris Oxlade
Ozone Hole by Sally Morgan
In 2012 16.4 % or Europe's population, 80 million people, lived below the poverty threshold
In 1998 Asia (including South Asia, East Asia, and the Pacific region) accounted for about two-thirds of the world’s 1.2 billion poorest people
In 2010, an estimated 2,265,000 people, including 575,000 children, lived in poverty
WOW! So Interesting
World Population: *7.14 billion
Canada: *34.88 million (2012)
America: *315.9 million (2012)
South America: *387.5 million (2011)
Africa: *1.033 billion (2011)
Europe: *739.2 million (2011)
Australia: *22.68 million (2012)
*numbers are not 100% accurate as the population is always increasing and decreasing
Thanks For Watching!!!
Is it affected to overpopulation?
Based on the information we know about global warming, I'd say it is affected mainly by overpopulation. Global warming isn't directly caused by us: it's the gases, particles, and chemicals that are released into the air that cause global warming and put us more at risk to disease. However, most of these gases come from us (with the exception of methane from cattle) We're the ones that produce all of the carbon dioxide and CFCs (which I'll talk about in pollution), and they all contribute to causing damage to our Earth. This is how global warming is indirectly caused by overpopulation - if our numbers keep growing, and if the Earth is overpopulated, then more and more people will be contributing to global warming by the means of producing all these chemicals into the air.
Is it affected by overpopulation?
Based on what we know about pollution, I would say yes, it is affected by overpopulation. Like with global warming, many things are are fault in pollution, especially with our production of CFCs. Indirectly, we are killing ourselves. We put things out into the atmosphere that later will greatly affect our health and environment, or even cause death. The more people in the world, the more people who put out the pollutants into the air, water, etc.
Because while the world is dying, the population continues to grow, at an alarming rate, eventually the world won't be able to support all the people on it, and even if it can there will still be more and more people contributing to global warming, pollution, animal extinctions, and other things.
Here is a short video about poverty
What does this have to do
with overpopulation?
What does this have to
do with overpopulation?
If a country does not control their population there could be problems with income distribution and job opportunities. So a country must keep the death rate and the birth rate (generally) balanced
If a child is born in poverty and cannot afford proper education, it is very unlikely that they will be able to get a good job to work their way out of poverty, and because they can’t afford to go to school they won’t learn about the outcome of having too many children, and therefore will most likely have a larger amount of children, who will live in poverty like their parents, so it’s just a cycle.
This Question will be answered using a criteria format
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