opengecko

Photo from flickr.com by Androfire (Some rights reserved)
From the IGCSE syllabus:
Describe the conditions required for the development of
coral reefs.
Describe
•  fringing and barrier reefs
• atolls
Describe the location of coral reefs, and the necessary conditions for their development:
http://library.thinkquest.org/C0125204/about/coraldist.swf
http://www.mbgnet.net/salt/coral/where.htm
http://www.seaworld.org/infobooks/coral/habdiscr.html
http://www.starfish.ch/reef/reef.html
http://www.marinebio.net/marinescience/04benthon/crform.htm
Understand and make brief notes on how coral reefs operate as an ecosystem:

Make notes on the different types of reef [...]

Photo from flickr.com by mikebaird [Some rights reserved]
The IGCSE Syllabus requires us to understand this:
Describe and explain the landforms associated with these processes. You should study the following coastal landforms:
□ coastal sand dunes
The action of wind in shaping coastal sand dunes should also be understood.

Here are four good websites to help you achieve this [...]

Uploaded on November 25, 2005 by mknobil Some rights reserved
Create a case-study document about the crisis in Darfur using the following resources:
1) The Guardian – Photo/Audio summary of  the crisis.
2) Map-based interactive GIS to show the geographic situation.
3) An organisation called ARC show some possible solutions.
4) Geographyalltheway on the Sudan crisis

[Source: commons.wikimedia.org Author fargomeD License GNU Free Documentation License]
A population pyramid (or age sex structure) often tells a story. Detective Discussion points:

What are the unusual features of the above age-sex structure?
Can you suggest possible reasons?

So how might this story look if we plotted the birth rates and death rates on the same line [...]