How are
people changing
the climate?

Basics

2. What will
a warmer world be like?

Worksheet 2

1. Write a text

Some of the most serious problems caused by climate change may occur in 50 or 100 years. The Intergovernmental Panel on Climate Change (IPCC) estimates that around the year 2100

• mean temperatures will have risen by 1.4-5.8 degrees
• sea level will have risen by 9-88 cm
• precipitation will have risen by 5-20%

Most probably you will not be alive in the year 2100, but your children and your grandchildren may be. 

a) In what ways do you think their lives will be different from yours, in terms of possible effects of a changed climate?

b) Do you think we should make an effort to reduce emissions of greenhouse gases today to avoid problems in 50 or 100 years?

2. Question to be answered individually or in groups

In the text it is suggested that the Muthialappa family will suffer greater damage in case of climate change than people living in central Europe. Why?

3. Write a text

The story goes that sheep farmers in North America were annoyed with the prairie wolves that took their lambs. Therefore they hunted the wolves, and the number of wolves decreased. In stead, however, the number of rabbits and small rodents increased, since these animals were the most important food for the wolves.
  

Wolf and rabbit (drawing by Linda Tam)

Gradually, the number of rabbits and rodents became so great that they did considerable damage to fruit and vegetable gardens. The farmers launched an extinction campagin against rabbits and rodents, and the small animals were almost made extinct in the area. After a while, the wolf population started to increase again, but now their normal food (rabbits and rodents) was scarce, so the wolves increasingly went after sheep and lambs. 

This story is an example of how the number of individuals of a species is dependent upon the numbers of other species (plants and animals). Make a similar story about how species that are dependent upon one another may be affected if one species either dies out or gets extremely numerous as a consequence of climate change.

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Authors: Ellen K. Henriksen and Camilla Schreiner - University of Oslo - Norway. Scientific reviewer: Andreas Tjernshaugen - CICERO (Center for International Climate and Environmental Research - Oslo) - Norway - 2004-01-20 Educational reviewer: Educational reviewer: Nina Arnesen - Marienlyst school in Oslo - Norway - 2004-03-10. Last update: 2004-03-27.