Www.Saveearth.Info Eco Quiz

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1. The chemical symbol for carbon monoxide is CO2?

Explanation

CO2 is the symbol for carbon dioxide.

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About This Quiz
Www.Saveearth.Info Eco Quiz - Quiz

Planet Earth needs you! How well do you know the ecological issues covered on this website? It's time to find out if you are an eco-master or an eco-novice. We won't pass on your name, it's just used on the certificate at the end.

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2. Half the people in the world today are below the age of 30?
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3. Pollutant particles have many serious health effects but which sized particles present the most risk to the human body?

Explanation

Particles smaller than 2.5 micrometers pose the most serious risk since they can bypass many of the bodies immune responses and pass deep down into the lungs.

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4. Air pollution can be caused by:

Explanation

Air pollution can be caused by liquids, solids and gases.

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5. The chemical symbol for ammonia is NH3?
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6. What is the chemical symbol of ozone?
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7. What percentage of the global population live in a polluted air environment?

Explanation

Current estimates put the figure at around 92% - it's a staggering proportion of us who live in a polluted air environment.

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8. Eutrophication is primarily caused by which chemical?
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9. Most plastics will degrade within 100 years?

Explanation

Most plastics degrade over a much longer time frame, estimates range from between 500 - 1000 years. Some plastics may take considerably longer.

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10. What percentage of global arable land has been lost since 1960?
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11. In 2012, the World Health Organisation (WHO) estimated that most premature deaths from outdoor air pollution were attributable to: 

Explanation

The WHO report stated that some 72% of premature deaths were associated with ischaemic heart disease and strokes.

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12. Aerosols typically spend how many days in the Earth's atmosphere?

Explanation

The typical time is 4-7 days although some aerosols can remain in the atmosphere for years.

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13. The current global population is around how many billion?
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14. Current atmospheric carbon levels have risen since the industrial revolution - back then, carbon levels were around 280 parts per million (ppm). What is the current approximate ppm figure?
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15. Forests are a significant store of carbon. How many tons a year are said to be stored in the world's forests?
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16. What percentage of all the water on Earth is considered freshwater?
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17. Oceans absorb what percentage of atmospheric carbon dioxide?
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18. What percentage of all freshwater is groundwater?

Explanation

Freshwater is roughly 69% attributable to glaciers and ice caps, 30% groundwater and 1% surface water.

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19. What percentage of the world's population relies on groundwater for drinking water?
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20. Outdoor air pollution causes more deaths per annum than indoor air pollution?

Explanation

Surprisingly, indoor air pollution causes more deaths.

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21. Particles in an aerosol are typically what size in diameter?

Explanation

Particles are typically 1-1000 nanometers in diameter. One billion nanometers fit into one centimeter!

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22. What is the correct composition of air?
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23. Extinction rates are currently estimated to be around 1,000 to 10,000 times higher than the 'background' extinction rate. How many species per year die out according to background rates?

Explanation

The background rate accounts for 5 species extinctions per year - by definition this means that current species extinction rates fall around the 5,000 - 50,000 per annum mark.

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24. Since 1960, the amount of arable land per head of global population has fallen by how much?
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25. How many acres are being lost per year through deforestation?

Explanation

Based on data from the United Nations Food and Agriculture Organisation.

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26. What is the percentage of certainty that experts place on human activity being the cause of global warming?

Explanation

NASA quotes a confidence value in excess of 95%, the Bill Nye National Geographic video puts the number at 97%.

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27. The current decline in species and organisms is being likened to a mass extinction event. How many previous mass extinction events do scientists think the Earth has known?

Explanation

The current decline is being referred to as the 6th mass extinction.

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28. What percentage of endangered animals are endangered because of man?

Explanation

So says the Encyclopedia Britannica.

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29. What percentage of a modern car can be recycled?

Explanation

It's 75% and the proportion is slowly rising all the time as manufacturers strive for sustainable solutions.

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30. Put the following species extinction risk classifications in the correct order starting with least 'at risk' and ending with highest risk status:Endangered (EN) Faces a high risk of extinction in the near future.Near Threatened (NT) May be considered threatened in the near future.Vulnerable (VU) Faces a high risk of endangerment in the medium term.Extinct (EX)Least Concern (LC) No immediate threat to species' survival.Critically Endangered (CR) Faces an extremely high risk of extinction in the immediate future.Extinct in the Wild (EW) Captive individuals survive, but there is no free-living, natural population. 

Explanation

The International Union for the Conservation of Nature (IUCN) is an international organisation that compiles data on endangered animals and places them into different threat categories. Well done if you got this one right - it's a toughie!

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31. Globally, how many billions of tons of fertile soil are lost each year?
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32. The last ice age ended approximately how many years ago?
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33. What percentage of the world's population live in areas with threats to water security?

Explanation

According to a 2010 Nature report, the figure is 80%.

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34. What is the biggest cause of deforestation in the Amazon?

Explanation

Up to 80% of deforested land in the Amazon is now used for pasture. The cattle industry has ballooned since the 1970's, giving Brazil the largest commercial cattle herd in the world.

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35. The pH logarithmic scale covers what range of values?
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36. Which of the following gases are NOT considered a major greenhouse gas contributor?Oxygen, carbon dioxide, methane, water vapour, nitrous oxide, 

Explanation

For those that selected water vapour, surprisingly, it is the most abundant greenhouse gas.

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37. What percentage of the world's oxygen is provided by oceans?

Explanation

According to National Geographic, around 70% is produced by marine organisms.

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38. What percentage of the total number of species that have ever lived on Earth are currently alive?

Explanation

99.9% of all species that have ever lived are now extinct.

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39. Since 1900, the average global temperature has risen by how many degrees Celsius?
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40. The industrial revolution has been credited with the onset of many of the Earth's current environmental issues. When did this revolution occur?

Explanation

The Industrial Revolution was the transition to new manufacturing processes in the period from about 1760 to sometime around 1820. This transition notably included going from hand production methods to machines and saw the start of rapid fossil fuel use.

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41. What percentage of the land's surface is covered by forest?

Explanation

According to NASA, it is 30%.

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42. What percentage of global arable land is thought to be badly degraded?

Explanation

According to The Millennium Ecosystem Assessment report which gathered data between 2001-2005.

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43. The illegal wildlife trade is big business. What is the current estimated annual value of this trade?

Explanation

According to the WWF, the illegal wildlife trade is the fourth largest illegal trade behind drugs, people smuggling and counterfeiting.

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44. What percentage of the world's population rely on groundwater for drinking water?
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45. Agriculture is the biggest cause of deforestation. What percentage of deforestation is caused by this?

Explanation

According to the United Nations, 48% is caused by subsistence farming and 32% from commercial agriculture making 80% in total.

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46. Place the following atmospheric layers in order of lowest to highest (from the Earth's surface)
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47. Since 1970, the total count of organisms on Earth has decreased by what approximate percentage?

Explanation

Earth has lost half of its wildlife in the past 40 years, says WWF.

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48. What percentage of forest fires are thought to be started by humans?
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49. What percentage of the Amazon rain forest has been lost since 1970?
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50. What percentage of aerosols in the atmosphere are generated by human activity?

Explanation

It's 'only' 10%. Most aerosols released into the atmosphere are naturally generated from sources like volcanic activity and forest fires.

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51. Experts predict a human global population of around how many billion by 2050?
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52. Groundwater extraction has been increasing year-on-year. Since 1960, by what percentage has extraction activity increased?
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53. Deforestation is said to account for what percentage of greenhouse gas emissions?
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54. The global population grows by around how many million every year?
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55. Oceanic pH values have dropped by what percent since the start of the industrial revolution?
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56. What percentage of plastics are recycled?

Explanation

It's just 6%.

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57. What percentage of plastic is thought to be single-use?
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58. What percentage of global food production is reliant on groundwater?
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59. What percentage of global biodiversity is said to hail for the world's rain forests?
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60. Annually, how many tons of plastic end up dumped into the world's oceans?

Explanation

According to National Geographic, the figure is 8 million tons.

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The chemical symbol for carbon monoxide is CO2?
Half the people in the world today are below the age of 30?
Pollutant particles have many serious health effects but which sized...
Air pollution can be caused by:
The chemical symbol for ammonia is NH3?
What is the chemical symbol of ozone?
What percentage of the global population live in a polluted air...
Eutrophication is primarily caused by which chemical?
Most plastics will degrade within 100 years?
What percentage of global arable land has been lost since 1960?
In 2012, the World Health Organisation (WHO) estimated that most...
Aerosols typically spend how many days in the Earth's atmosphere?
The current global population is around how many billion?
Current atmospheric carbon levels have risen since the industrial...
Forests are a significant store of carbon. How many tons a year are...
What percentage of all the water on Earth is considered freshwater?
Oceans absorb what percentage of atmospheric carbon dioxide?
What percentage of all freshwater is groundwater?
What percentage of the world's population relies on groundwater...
Outdoor air pollution causes more deaths per annum than indoor air...
Particles in an aerosol are typically what size in diameter?
What is the correct composition of air?
Extinction rates are currently estimated to be around 1,000 to 10,000...
Since 1960, the amount of arable land per head of global population...
How many acres are being lost per year through deforestation?
What is the percentage of certainty that experts place on human...
The current decline in species and organisms is being likened to a...
What percentage of endangered animals are endangered because of man?
What percentage of a modern car can be recycled?
Put the following species extinction risk classifications in the...
Globally, how many billions of tons of fertile soil are lost each...
The last ice age ended approximately how many years ago?
What percentage of the world's population live in areas with...
What is the biggest cause of deforestation in the Amazon?
The pH logarithmic scale covers what range of values?
Which of the following gases are NOT considered a major greenhouse gas...
What percentage of the world's oxygen is provided by oceans?
What percentage of the total number of species that have ever lived on...
Since 1900, the average global temperature has risen by how many...
The industrial revolution has been credited with the onset of many of...
What percentage of the land's surface is covered by forest?
What percentage of global arable land is thought to be badly degraded?
The illegal wildlife trade is big business. What is the current...
What percentage of the world's population rely on groundwater for...
Agriculture is the biggest cause of deforestation. What percentage of...
Place the following atmospheric layers in order of lowest to highest...
Since 1970, the total count of organisms on Earth has decreased by...
What percentage of forest fires are thought to be started by humans?
What percentage of the Amazon rain forest has been lost since 1970?
What percentage of aerosols in the atmosphere are generated by human...
Experts predict a human global population of around how many billion...
Groundwater extraction has been increasing year-on-year. Since 1960,...
Deforestation is said to account for what percentage of greenhouse gas...
The global population grows by around how many million every year?
Oceanic pH values have dropped by what percent since the start of the...
What percentage of plastics are recycled?
What percentage of plastic is thought to be single-use?
What percentage of global food production is reliant on groundwater?
What percentage of global biodiversity is said to hail for the...
Annually, how many tons of plastic end up dumped into the world's...
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