CK12 Life Science

source can adapt to such conditions. Thus, if two trees growing close together are competing for light, water, and nutrients, on ...

Table 23.4: Main Features of Competition Type of Competition Description of Competition Direct Competition Occurs directly betwe ...

Figure 23.12: An example of a true predator, showing a lioness actively hunting warthogs in the western corridor of the Serenget ...

ties by preventing a single species from becoming dominant, as in grazers of a grassland. Introduction or removal of these domin ...

Figure 23.14: Camouflage by the dead leaf mantis,Deroplatys desiccaa, makes it less visible to both its predators and prey. If a ...

Parasites include those that either live within the host’s body, such as hookworms, or those that live on its surface, such as l ...

Review Questions Define competition. If the geographic distributions of two similar species do not overlap, would you expect th ...

commensalism A type of symbiosis in which one species benefits while the other is not affected. community An assemblage within t ...

23.4 Lesson 23.4:: Ecosystems Lesson Objectives Explain what an ecosystem is. Discuss how biotic and abiotic factors play a rol ...

Figure23.16: Anexampleofadesertecosystem, adesertinBajaCalifornia, showingSaguaro cactus. ( 15 ) relationships connecting all hu ...

Niche One of the most important ideas associated with ecosystems is thenicheconcept. A niche refers to the role a species or pop ...

control soil erosion. Kudzu had no natural enemies there and was able to outcompete native species of vines and take over their ...

Figure 23.19: Santa Cruz, the largest of the northern Channel Islands, has the most diverse of habitats in the sanctuary, includ ...

Figure 23.21: Winter flock of bearded reedling in their natural habitat of dense wetland reeds, in Helsinki, Finland ( 6 ) Habit ...

List three abiotic components of importance to trees living in a forest. Give an example of an organism filling a vacant niche. ...

The biosphere is considered to be a global ecological system. Given all you now know about ecology, what do you think the biosp ...

The biodiversity characteristic of each biome, especially the diversity of fauna and sub- dominant plant forms, is a function of ...

Table 23.6: (continued) Characteristics of Terrestrial Biome Description of Characteristics Elevation Increasing elevation cause ...

Figure 23.22: One of the terrestrial biomes, a taiga, a coniferous evergreen forest of the subarctic, covering extensive areas o ...

Other marine habitat types include: continental shelf littoral/intertidal zone coral reef kelp forest (Figure23.24) pack ice (F ...