1. Biomes Of The World
... is great variation in tolerance to environmental extremes, maximal in endothermal birds and mammals. Land and water are two basic environments, and many animals move between them or secondarily into air for relatively brief periods. Locomotion is significant in animals (lacking in plants for most part) to allow these ... for dispersal or may involve seasonal back-and-forth migration. Some major groups of animals are sessile (fixed in place) and like plants move only in certain life-history stages. Space needs lead to fixed or dynamic home ranges, which are defended in some sessile or terr...
- Word Count: 12375
- Approx Pages: 50
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- Grade Level: Undergraduate