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Question 1

Greenhouse gases keep the heat in the atmosphere, which in turn warms up the earth.

different gases from fossil fuels

Question 2

Different forms of waste

Answer 2

1. Physical Waste or Solid Waste
2. Water waste
3. Sewage - mainly feces
4. Air polution

Question 3

chloro fluoro carbons have destroyed the ozone layer.

Answer 3

And then we banned them back in the 1970s. And the ozone layer has been repairing but it’s not fully repaired yet, but it lets more UV light in from the sun. And that can result in different diseases and cancers and plant death.

Question 4

So the main forms of radiation being

Answer 4

X rays, CAT scans, etc

Question 5

mercury,

Answer 5

which mostly you can see in a lot of places, but the most common one that you would probably be exposed to is in the fish

Question 6

lead

Answer 6

where it’s lead based paints or leaking and pipes and it can get into your water

Question 7

asbestos

Answer 7

which is for insulation and has been we don’t use anymore but in some older buildings, there may be asbestos in some of the insulation and once there’s a crack in the wall, or something breaks or they tear it down, it lets off a lot of asbestos into the air, which can lead to lung cancer.

Question 8

We recognize that environmental pollutants contribute to chronic disease in addition to infectious disease

Question 9

Technological advances have had a negative impact on the health of the planet and human health

Question 10

How Many People Can the World Hold?

Answer 10

Suggested that the Earth’s carrying capacity has been exceeded

changes will be required in Food, Available land and water, Energy, & Minimum acceptable standard of living

Question 11

Factors That Contribute to Population Growth

Answer 11

Fertility rates
—Developed countries have reductions in fertility due to contraception while undeveloped countries have fertility rates sustaining population growth
—Families have enough children to work for the household and care for parents in old age

Lack of family planning resources
—More than half of the world’s population do not use any form of family planning

Lower death rates
—Higher rates in developing countries but have decreased due public health measures and improved medical care

Population management must change the condition of people’s lives
—Remove the pressure to have large families

Question 12

The air quality health index (AQHI) is used to determine potential health risk

Answer 12

Calculated on the risks of the mixture of:
Nitrogen Dioxide (NO2)
Particulate matter
Ground level ozone (O3)

The higher the AQHI the greater the associated health danger

+7 or above is considered high

Question 13

Smog was first used in London in the early 1900’s to describe smoke and fog

Answer 13

Today smog is a mixture of pollutants with ground level ozone being the key ingredient
ex. Heavy motor vehicle traffic, high heat and sunny weather

Question 14

Greenhouse Effect and Climate Change (1)

Answer 14

Temperature of the earth depends on the balance of energy absorbed and radiated back to space

Key components of temperature regulation are:
Carbon dioxide
Water vapour
Methane
Other greenhouse gases

Question 15

Greenhouse gases are so named as they act like panes of glass in a greenhouse

Answer 15

Traps some of the infrared radiation and re-radiate it back to earth

Needed to keep the Earth more hospitable for all life forms

Question 16

Step 1 of Greenhouse Effect

Answer 16

Energy from the sun warms Earth.
Most incoming solar radiation is
absorbed by the atmosphere and
Earth’s surface; the rest gets
reflected back into space

Question 17

Step 2 of Greenhouse Effect

Answer 17

Earth radiates heat away as infrared
energy. Some of this energy is radiated
into space, some is absorbed by the
atmosphere, and some is reradiated
back to Earth’s surface by greenhouse
gases in the atmosphere. This reradiated energy also warms Earth.

Question 18

Step 3 of Greenhouse Effect

Answer 18

Human activity is increasing the
concentration of greenhouse gases in
the atmosphere. The concentration of
these gases helps determine how much infrared radiation gets reflected back to Earth, so an increase in these gases can cause Earth‘s temperature to rise.

Question 19

There is consensus that human activity is causing global warming or climate change

Question 20

Climate change –

Answer 20

long term shift in weather conditions

Question 21

Global warming

Answer 21

an increase in the Earth’s atmospheric temperature

Question 22

Serious weather events of Climate Change

Answer 22

More frequent flooding
Extreme heat
Extreme cold weather events

Question 23

Combustion of fossil fuels

Answer 23

Levels of CO2 have increased dramatically in recent decades

Ice core samples suggest CO2 is 40% higher than in the last 800,000 years

Deforestation sends CO2 into the atmosphere and destroys the trees that covert CO2 into O2

Question 24

Canada ranks in the top three countries to emit more than double the global average of greenhouse gases

Question 25

Years 2016 and 2020 were the warmest on record
2017 was third
Since 2022 the past seven years have been the warmest recorded

Question 26

Carbon dioxide

Sources

Answer 26

Fossil fuel and wood burning, factory emissions, car exhaust, deforestation

Question 27

Chlorofluorocarbons (CFCs)

Sources

Answer 27

Refrigeration and air-conditioning, aerosols, foam products, solvents

Question 28

Methane

Sources

Answer 28

Cattle, wetlands, rice paddies, landfills, gas leaks, coal and gas industries

Question 29

Nitrous oxide

Sources

Answer 29

Fertilizers, soil cultivation, deforestation, animal feedlots and wastes

Question 30

Ozone and other trace gases

Sources

Answer 30

Photochemical reactions, car exhaust, power plant emissions, solvents

Question 31

Sources of Greenhouse Gases

Answer 31

1.Carbon dioxide
2. Chlorofluorocarbons (CFCs)
3. Methane
4. Nitrous oxide
5. Ozone and other trace gases