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True or false The loss of a species from an ecosystem usually has no effect because of the presence of other species in the ecosystem?
Wiki User
∙ 10y ago
Loss of one species from a community has a large effect. This is because this can cause major changes in food webs and chains and can cause other organisms to die.
Wiki User
∙ 9y ago
Wiki User
∙ 10y agoFalse
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Are there dominant species in a diverse ecosystem?
Usually yes
Introduced species often take over an ecosystem because they usually what?
Introducing new species threatens biodiversity in several ways. The new species may upset the food chain in an area. If a species grows faster than native species, they may eat all of the food, leaving little for the natural fauna. The new species may also, conversely, be great food for an existing species which would give one species a great growth advantage over others.
When do species compete in an ecosystem?
Since food and other resources are limited, the members of a species must compete with each other to survive. Competition does not always involve direct physical fights between members of a species. Instead, competition is usually indirect.
When a pollen grain lands on stigma it usually sticks because of the presence of?
its either from sugar or water.
How do invasive species disrupt ecosystems?
Invasive species have such an impact on the environment because they basically have no naturally known enimies. If they come from a different land, the organisms that are already living there aren't used to the envasive species being there, and have no natural defense against them. The invasive species will devour all it wants, and can wipe out an entire population of a species in an area.
Are there dominant species in a diverse ecosystem?
Usually yes
Plants introduced into new habitats in which they were not originally raised are?
Invasive species are different species, either plants or animals, which are purposefully or accidentally introduced into a new ecosystem. They can be good in some ways but bad in others because they usually don't have as many predators in the new ecosystem and can take over.
True or false when non native species enter an ecosystem they usually occupy unfilled niches?
the answer is true
What are two examples of species that are endangered because something in their ecosystem with was disturbed?
Flightless birds in the pacific are usually endangered or extinct, they can't compete with European mammals, such as cats, foxes and dogs. The disturbance usually being the introduction of a new species. The kiwis of New Zealand is one example Different species of Wallaby is another.
Is a tree harmed because of the presence of birds?
Usually no.
What is the physical difference between a healthy freshwater ecosystem and an unhealthy freshwater ecosystem?
Appearance is not an accurate indication of potability [ drinkability -- fit for human consumption ]. For example, a powerful poison can be a clear, transparent and sparkling liquid in a glass, looking exactly like a glass of refreshing water. But what a difference healthwise !!! The above answer does not tell much about the health of an ecosystem, although it is important to remember when looking for a source of drinkable water. A healthy freshwater ecosystem will have little pollution, few invasive species, and an abundance of both plant and animal species. The presence of leeches usually indicates good quality water.
How does the energy leaves the ecosystem?
Usually, energy leaves the ecosystem when an organism leaves the ecosystem, they usually leave by death.
Why ecologists are so worried about foreign organisms?
Foreign organisms refer to invasive species which inhabit a foreign environment. Usually invasive species out compete native species and kill them off by taking their resources (abiotic/biotic). And can be considered a "pest" because they are large in numbers and spreading/taking over native land and competing with native species. Therefore can really change an ecosystem when an invasive species comes in.
Why do different species herd together?
because there usually a family
Introduced species often take over an ecosystem because they usually what?
Introducing new species threatens biodiversity in several ways. The new species may upset the food chain in an area. If a species grows faster than native species, they may eat all of the food, leaving little for the natural fauna. The new species may also, conversely, be great food for an existing species which would give one species a great growth advantage over others.
When do species compete in an ecosystem?
Since food and other resources are limited, the members of a species must compete with each other to survive. Competition does not always involve direct physical fights between members of a species. Instead, competition is usually indirect.
What is a difference between hibernation and migration?
Hibernation is remaining dormant in the same ecosystem. Migration is travelling to a differnet ecosystem. These are usually caused in the winter because of the drop in the climate's temperature.
