18.104.22.168.1 Describe how plant and animal structures and their functions provide an advantage for survival in a given natural system. For example: Compare the physical characteristics of plants or animals from widely different environments, such as desert versus tropical, and explore how each has adapted to its environment.
http://www.enchantedlearning.com/biomes/ Information on the many biomes-habitats.
http://www.cotf.edu/ete/modules/msese/earthsysflr/biomes.html Biomes including a map to show locations and information on the animals living in the biomes.
http://www.enchantedlearning.com/geography/landforms/glossary.shtml Illustrated glossary of landforms.
http://www.fossweb.com/modules3-6/Landforms/index.html Foss interactive activities for landforms.
http://www.mbgnet.net/fresh/wetlands/index.htm Importance of wetlands