they have no symbiotic realships
Grazing increases root production. This could only be described as symbiosis in a very loose sense. Generally symbiotic relationships are much more dependant ...such as the termite and its gut bacteria or to a lesser degree the mutualism of an anenome and a clown fish.
Joseph Black discovered carbon dioxide (CO2).
The relationship is called parasitism. The cowbirds raid the other bird's nest and lay their eggs there. The other bird has to migrate to another tree to build a new nest.
the wadjabirri black bean
Black holes are believed to emit something called Hawking radiation.
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black widows
The spider you are describing could be a black widow spider. Black widows are known for their sleek black bodies and long, thin legs that give them a distinct appearance. They also have a red or orange hourglass-shaped marking on their abdomen.
here are lots but some are: Black widows , Brown recluse. lots mainly look on the website discovery.ca
You are probably defining a false black widow.
Symbiotic relationships are usually referred to as "give and take" but this is not always the case, whilst some may be beneficial eg. mutalistic, commensalistic others are not eg. parasitism. The isopod falls into the parasitic category where one species benefits and the other does not.
Only black widows have hourglasses on their backs... You should probably be careful
Plants make and propagate with seeds. It isn't a symbiotic relationship since that is inter-species. Many plants have symbiotic relationships with insects (bees and flowers). link on symbiosis: http://www.answers.com/topic/symbiosis?cat=health
it is a symbiotic relationship
Symbiotic.
Mycorrhizae are symbiotic relationships between the roots of plants and fungi that act as extensions of the root system. The fungi supply the plant with certain nutrients, and the plant in turn supplies the fungi with carbohydrates.
no are you crazy