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Physical Geography Chapter 11

Across
Animals that have a backbone which protects the main nerve
Worms, sponges, mollusks, and various marine animals are all examples of ______
Desert vegetation is surprisingly _____
Flowering plants are also called _____
Plants such as cacti wth fleshy stems are called ______
How many principal groups of vertebrates are there?
Community of plants and animals, including all interactions between organisms and the environment
Down
The elevation above which trees cannot survive
_____ consist of trees growing so close together that their individual leaf canopies generally overlap
Plants that survive seasonal fluctuations from year to year
Any large, recognizable assemblage of plants and animals in functional interaction with the environment
In furred animals, ___ are prime conduits for body heat, as they provide a relatively bare surface for its loss