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Deforestation
Cattle let off methane gas!

Deforestation

This Biology quiz is called 'Deforestation' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.

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Sustainable forestry is when new trees are planted to replace ones that have been deliberately cut down and removed. Deforestation is the removal of trees from their natural habitat and it happens where unsustainable forestry or deliberate clearance of trees to provide a change of land use is taking place. In this middle school Biology quiz we look at its causes and also its effects.

1.
Global warming can lead to...
deforestation
climate change
new species
an ice age
Some areas like the British Isles will have more rainfall and high winds. Other places will have less rainfall, turning them into deserts
2.
Deforestation leading to increased cattle farming also increases global warming because of the release of which greenhouse gas?
Oxygen
Nitrogen
Ammonia
Methane
Cattle let off methane gas!
3.
If peat bogs are removed, this can increase...
ozone levels
carbon dioxide levels
oxygen
water vapor
Destroying the peat bogs in order to build on them will reduce the uptake of carbon dioxide, leading to its build up in the atmosphere. Many gardeners now choose to use peat-free compost products in their gardens and greenhouses
4.
Deforestation makes global warming worse because...
the trees have all gone
the trees would have taken up carbon dioxide
the trees would have given off oxygen
there are still plenty of trees left
Fewer forests means that there is less photosynthesis and so less carbon dioxide is removed from the air
5.
Burning trees contributes to global warming because...
combustion releases carbon dioxide
combustion needs oxygen
the trees die
there are more rice fields
This is a greenhouse gas. Greenhouse gasses trap heat in the Earth's atmosphere making it warmer than it would be without them. This means that there is more energy available to power wind and other weather phenomena
6.
One reason for deforestation is to provide...
timber
waste
clean water
fire
Timber is another word for wood
7.
Greenhouse gasses can increase the temperature of the Earth by...
trapping heat in the atmosphere
increasing heat radiation
disappearing during the day
letting go of heat at night
Warmer conditions may sound pleasant but it's not as simple as that. Deserts will grow larger meaning there is less area for growing food crops and weather patterns will change as there is more energy in the atmosphere
8.
Slash and burn releases which gas into the atmosphere?
Carbon monoxide
Ozone
Carbon dioxide
Carbon
This carbon dioxide comes from the combustion of carbon compounds in the trees. Oxidation of carbon produces carbon dioxide
9.
Deforestation leads to what change in biodiversity?
A decrease in biodiversity
An increase in biodiversity
No change in biodiversity over many years
A decrease in biodiversity, followed by an increase
For a given area, biodiversity is a measure of the population size, number of species of animals and plants as well as the genetic variation within each species living there, the differences between species and the differences between ecosystems and habitats. If trees are removed, there are fewer habitats for plants and animals leading to a decrease in biodiversity
10.
What is deforestation?
Removal of carbon dioxide
Removal of water
Removal of trees
Removal of plants
Sustainable forestry avoids deforestation as new trees are planted to replace those cut down
Author:  Donna Maria Davidson

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