How do predator and prey influence one another?
818209
a. Predators reduce the number of prey, simply because they eat them! But in the long run, evolution allows the prey to compensate by reproducing at a more frequent rate. This is why foxes reproduce much more slowly than do rabbits. Rabbits get eaten a lot by other animals such as foxes, so their survival as a species depends on their numbers.\n\nb. Predators evolve to become more efficient hunters. Over time, they grow sharp teeth, acute senses, speed and stealth.. Prey evolve to be better able to run away or hide from predators. They may become more alert of their senses, develop faster legs, learn to climb trees.. etc.\n\nHope that helps!
526071
Populations are self balancing. When the population of a prey declines the population of predators also decline because there is simply less to eat. Both populations decline until there are too few predators to keep the prey population down, and the prey population is able to grow again.\n\nAnd so the population swings back and forth. It never goes below or above a certain level though, this is called the Bumpar Equilibrium. \n\nIf populations stray greatly from the equilirium, it means the animals are dying for causes besides predation, and one or both species may be heading for extinction.
23426
They are both. There are Good ones and Bad ones. Some parasites such as leeches simply suck your blood out and do nothing for you. Other parasites have what is known as "Symbiotic Relationships" where they help one another. For example, there are birds that nest on alligators. The alligators give the bird safe haven from dangerous predators. The Birds in turn feed on particles of food left in the alligators mouth so they dont suffer from dental problems. They help one another out.
538259
phytoplankton\nzoo plankton\nfilter feeders (clams, corals etc) and small fish\nlarger predatory fish and coral grazers\neven larger predatory fish
686578
Predator,technically.They're poisionous,so it kinda cuts down on natural enemies.
82743
It is in part about predator prey.  It is also in part about mazimazing food opportunities.\n\nThe predator prey thing is a tactic where in the individual has a better chance of getting thru hostile territory if there are others out to take the hit.  This is more about continuance of the species than continuance of the individual.\n\nThe food thing is about jumping in while the food available.  Butterflys, until Bees, have not evolved a method for telling everyone else where the food is.
1104212
Owls and mice are in a relationship called a prey- preditor.  The number of owls are dependent on the number of mice.  If they eat all the mice they would run out of their primary food source.  This in turn would keep them from laying eggs and raising their young.  Their numbers would decrease.  Mice eat insects and plants.  So if they all disappear it would seem logical plants and insects would increase.  The ansewer is: increased owl population would cause a decrease in mice population which in turn would cause an increase in plant population or
886883
Changing a small thing in the environment has a HUGE impact.  And everything in nature is a balance.  (Read on for a better explanation, but first...)\n\nOk, I read this last year so forgive me if my memory is incorrect.  But this is the story where the wolf is killed, which allows the deer to take over the mountain, which ultimately means the destruction of the mountain.\n\nEverything has a purpose.  Nature is a balance.  It is the wolf's job to keep the deer in proper number.  Without the wolf, the deer become over-abundant.  This leads to more plants being eaten by the deer because there are more deer.  Then, because more plants are being eaten, there is not enough plant-life to maintain the increase in deer.  So the deer begin to die or move on because there is not enough food for them to eat.\n\nFrom the perspective of a human, the wolf is just a threat.  But from the perspective of the mountain, the wolf is a necessary part to keep everything in balance and to keep everything alive.
755931
Basically predators such as lions, leopards, and cheetahs reach their top speed faster than the hooved animal prey does. Certain prey animals have faster top speeds than their predators but they can not get up to top speed fast enough to outrun them. The predator must get within a certain distance of its prey undetected so the predator has very little ground to make up in the chase.
257225
There are many predators all over the internet.  MySpace puts many of the people commonly targeted by predators in one location, therefore you will find many predators on MySpace.
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Since they have no natural predators, they take over the environment.  This happens because the addition of this new predator throws off the balance of the ecosystem, sometime fataly.
1026025
I'm not certain anyone but a biologist can answer this one correctly, but I'll take a stab: the organisms in any ecosystem are related to each other in a hierarchy, like a food chain. Other relationships are helping, symbiotic or parasitical relationships in which one organism's function allows another to live. An ecosystem thrives when all its organisms are in balance.
67977
Darwinian theory states that within an ecoclimate/system an ubundance of organisms interact depend and compete for survival. \nSome even co-exist this is known as symbiosis,where both organisms have become mutually dependant on each oters existance for survival.
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Interdependence? Mutually Dependent. Most of the natural world is mutually dependent on its environment in order to sustain the eco-system. An example is the honey bee which is dependent upon flowers for nectar to create honey (the bee eats honey), in turn the flowers are dependent upon the honey bee for reproduction. The honey bee cross-pollinates flowers by simply spreading the pollen that gets on itself from one flower to another, thereby creating more flowers.
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The hare population would increase exponentially in the absence of its predator.  It would not increase without bound, though.  It would only increase until it reaches the maximum that the local resources (space, water, edible plants) can support, and then it will level out.
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By eliminating weak individuals in the prey population and causing natural selection to play its role in population genetics.  \n\nI knows its a vague answer but  I can't remember all the fancy terminology in population ecology.
43968
Biodiversity maintenance works on the golden principle of natural selection. too many individuals of the same species or that of the species that have similar needs, cannot survive. So there's always natural favorism given to equal number of individuals of  each species. Humans do interfere with this though.