Discusses the effect of large animals on the structure and function of river corridors. The integration of river corridors; Functional groupings; Case studies of functional similarities; Wildlife management and river corridors; Wildlife management strategies to create and maintain the ecosystem-level ...
Fungi are decomposers that derive nutrients from dead plants and animals in the environment. Most herbivores are prey animals, but carnivores and omnivores can be prey, as well. Apex predators, which are the top predators in an ecosystem, are the only ones not eaten by other animals....
劳动生产率越高，生产一种物品所需要的劳动时间就越少，凝结在该物品中的劳动量就越小，该物品的价值就越小。相反地，劳动生产率越低，生产一种物品的必要劳动时间就越多，该物品的价值就越大。因此，为了增加单位商品的价值量，我们要尽量降低劳动生产率。这一观点 ...
Which animals are a r-selected species? R-selected animals are those that produce large numbers of offspring at a time. Examples include frogs, most insects, and salmon. Are humans r-selected species? Humans are not r-selected species. Because they provide high levels of parental care, produc...
What is an ecological niche? Is it common to find two species occupying the same ecological niche in a functioning ecosystem? What happens when two species occupy overlapping niches? (a) What is a habitat? (b) What factors affect the distribution of plants and animals? Which terrestrial b...
Prairie streams of North America support native fishes that are adapted to the dynamic environment that characterizes these ecologically and economically i
Plankton plays an important role in the lake ecosystem. They are highly sensitive to water quality because of their small size, simple cell structure, short life cycle, and fast reproductive rate2,3. Variations in the composition, community structure, and abundance of plankton species indirectly ...
Lake ecosystems play a crucial role in maintaining the ecological balance of watersheds and the aquatic biological communities within the water bodies1. Plankton plays an important role in the lake ecosystem. They are highly sensitive to water quality because of their small size, simple cell structu...
Explore the concept of arboreal habitats. Learn the definition of an arboreal habitat and understand its characteristics. View what kind of animals...
Characteristics of Vertebrates Classifications of Vertebrates Why are Vertebrates Important? Lesson Summary Frequently Asked Questions What is the classification of vertebrates? Vertebrates are a group of animals found in Kingdom Animalia. They are in the Phylum Chordata. They are in the subphylum Vert...