Explain the basis for grouping plant communities into biomes and list the major aquatic and terrestrial biomes on Earth. Explain the potential impact of non-native species on biotic communities, using...

Explain the basis for grouping plant communities into biomes and list the major aquatic and terrestrial biomes on Earth. Explain the potential impact of non-native species on biotic communities, using several examples.

What happened in the waters of Tristan da Cunha? Why was this subject first introduced in Chapter 6 of the text and then concluded in this chapter? What are the linkages between the chapters? What economic damage might evolve in Tristan’s marine ecosystems?