食物网(foodweb)又称食物链网或食物循环。在生态系统中生物间错综复杂的网状食物关系。实际上多数动物的食物不是单一的,因此食物链之间又可以相互交错相联,构成复杂网状关系。在生态系统中生物之间实际的取食和被取食关系并不象食物链所表达的那么简单,食虫鸟不仅捕食瓢虫,还捕食蝶蛾等多种无脊椎动物,而且食虫鸟本身...
1.A succession of organisms in an ecological community that are linked to each other through the transfer of energy and nutrients, beginning with an autotrophic organism such as a plant and continuing with each organism being consumed by one higher in the chain. ...
食物网（food web）又称食物链网或食物循环。在生态系统中生物间错综复杂的网状食物关系。实际上多数动物的食物不是单一的，因此食物链之间又可以相互交错相联，构成复杂网状关系。在生态系统中生物之间实际的取食和被取食关系并不象食物链所表达的那么简单，食虫鸟不仅捕食瓢虫，还捕食蝶蛾等多种无脊椎动...
creating a possible food web Possible food chains / food webs: Desert | Coniferous Forest | Deciduous Forest | Temperate Rainforest A change in the size of one population in a food chain will affect other populations. This interdependence of the populations within a food chain helps to ...
Desert Food Chain - A food chain always begins with the plants, called producers. It always ends with the animals, called consumers.
The different feeding positions in a food chain or web are called trophic levels. The first trophic level consists of producers, the second of primary consumers, the third of secondary consumers, and so on. There usually are no more than four or fiv...
A food web is a group of different food chains that work together to make the ecosystem. Food chains in the food web are interlinked at one point or another. The food chain is the pattern that energy uses to transmit to producers to decomposers. ...
Some food chains include the sun as a provider of energy to living things. Others include decomposers–fungi and bacteria that break down organic matter and fertilize the producers. Animals in a food chain or web often are classified as herbivores (plant-eaters), omnivores (plant- and animal-...
Food ChainMatch Each Word to Its DefinitionMatch each food web word to its definition (printable worksheet). Words: autotroph, heterotroph, carnivore, herbivore, primary consumer, secondary consumer, tertiary consumer. Or go to the answers. Food Chain Spelling Word QuestionsUse the list of food ...
A food web is the collection of all the food chains within an ecosystem. Every organism in an ecosystem has a certain trophic level, position, or web in the food chain. The bottom of the trophic pyramid is made up of producers who manufacture their own food through photosynthesis or ...