- types of tundra and global distribution
- low-energy biome and low NPP
- limited biodiversity (just for you Ben...)
- adaptations of plants and animals
- food web
- soil characteristics
For no particular reason other than that you seemed quite impressed with them this morning, a nice picture of a lemming (courtesy of Flickr user kgleditsch under CC):
The exam question that I gave you needs to be finished for Wednesday next week please.
The ecosystem of the Southern Ocean was the final thing that we looked at - rich ecoystem due to the cold water holding plenty of oxygen and carbon dioxide, turbulent waters ensuring a ready supply of nutrients, and long daylight hours for part of the year allowing for plenty of photosynthesis.
And for those of you who preferred chinstrap penguins to lemmings, a rather nice picture from Flickr user robnunn, again under CC:
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