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The most stable predator-prey relationships typically involve
Weegy: A true predator can commonly be known as one which kills and eats another organism. Whereas other types of predator all harm their prey in some way, this form certainly kills them. [ Predators may hunt actively for prey, or sit and wait for prey to approach within striking distance, as in ambush predators. Some predators kill large prey and dismember or chew it prior to eating it, such as a jaguar or a human; others may eat their (usually much smaller) prey whole, as does a bottlenose dolphin swallowing a fish, or a snake, duck or stork swallowing a frog. Some animals that kill both large and small prey for their size (domestic cats and dogs are prime examples) may do either depending upon the circumstances; either would devour a large insect whole but dismember a rabbit. Some predation entails venom which subdues a prey creature before the predator ingests the prey by killing, which the box jellyfish does, or disabling it, found in the behavior of the cone shell. In some cases the venom, as in rattlesnakes and some spiders, contributes to the digestion of the prey item even before the predator begins eating. In other cases, the prey organism may die in the mouth or digestive system of the predator. Baleen whales, for example, eat millions of microscopic plankton at once, the prey being broken down well after entering the whale. Seed predation and egg predation are other forms of true predation, as seeds and eggs represent potential organisms. Predators of this classification need not eat prey entirely, for example some predators cannot digest bones, while others can. Some may eat only part of an organism, as in grazing, but still consistently cause its direct death. ] User: The most stable predator-prey relationships typically involve? 1 prey with several different predators. (top-down and bottom-up population regulation) 2 two species of carnivores eating each other. 3 parasite control only. 4 bottom-up population regulation alone. Weegy: A) prey ... (More)
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Asked 7/7/2012 1:41:02 PM
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In general, K-strategists have a User: A keystone species (Points : 5) has a disproportionately large impact on an ecosystem due to its role in the survival of many other species. typically reduces overall diversity of an ecosystem. is typically an herbivore. is an example of amensalism.
Weegy: A .has a disproportionately large impact on an ecosystem due to its role in the survival of many other species. A keystone species is a species that has a disproportionately large effect on its environment relative to its abundance.[1] Such species [ play a critical role in maintaining the structure of an ecological community, affecting many other organisms in an ecosystem and helping to determine the types and numbers of various other species in the community. The role that a keystone species plays in its ecosystem is analogous to the role of a keystone in an arch. While the keystone is under the least pressure of any of the stones in an arch, the arch still collapses without it. Similarly, an ecosystem may experience a dramatic shift if a keystone species is removed, even though that species was a small part of the ecosystem by measures of biomass or productivity. It has become a very popular concept in conservation ] User: The relationship between the moose and wolf populations on Isle Royal reveal (Points : 5) intraspecific competition. top-down and bottom-up population regulation. the high and steady environmental resistance on wolves. the high and steady environmental resistance on moose. Weegy: 1. intraspecific competition. User: The reindeer population changes on St. Matthew Island appears to have ultimately been caused by (Points : 5) overgrazing and the absence of any predators. the addition of a keystone species. the reliance of reindeer. the introduction of grizzly bears to the island in 1962. Weegy: the introduction of grizzly bears to the island in 1962. (More)
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Asked 7/7/2012 1:46:22 PM
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