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Population changes come from Food; The Environment; Other Organisms; and/or Reproduction.

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Yes they are from the sea lamprey.

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Yes the sea lamprey are killing the trout by sucking there blood they a probably bleeding to death

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Yes the sea lamprey are killing the trout by sucking there blood they a probably bleeding to death

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The sea lamprey feed on the blood of the fish the woulds are that after the sea lamprey stops feeding

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The sea lamprey feed on the blood of the fish the woulds are that after the sea lamprey stops feeding

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I didn't say if an invasive organism was eating the trout I was saying is an invasive organism  eating the trouts FOOD.

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I didn't say if an invasive organism was eating the trout I was saying is an invasive organism  eating the trouts FOOD.

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Yes they part of that because they are predators

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no, the Sea Lamprey are destroying their population

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Sea lamprey eat lake trout, brown trout, lake sturgeon, lake whitefish, ciscoes, burbot, walleye, catfish, and Pacific salmonids including Chinook and coho salmon and rainbow trout/steelhead.

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it seems to be an invading predator

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Are the Sea Lamprey killing the trout by sucking their blood out?

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Are the sea lampreys killing the trout or are they just taking blood.

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Do the affected Trout change their behavior.

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Do the affected Trout change their behavior.

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What are the wounds that are showing up on the big fish and the take trout. Is it because of the sea lampery

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Is there other things the sea lamprey could eat besides trout?

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Why is the sea lamprey eating the trout and other big fish. 

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Why is the sea lamprey eating the trout and other big fish. 

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Are the wounds on the fish from the sea lamprey

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Are the wounds on the fish from the sea lamprey

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Are the wounds on the fish from the sea lamprey

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Are sea lamprey the reason for they population decrease?

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Have they moved to colder or deeper water?

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will more organisms die with the trout because of sea lampery

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will more organisms die with the trout because of sea lampery

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Are the wounds on the fish from the sea lamprey

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Is their reproduction system not working to  due to an infection?

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Is their reproduction system not working to  due to an infection?

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A trout lives up to 8 years, then why is the population decreasing very fast?

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A trout lives up to 8 years, then why is the population decreasing very fast?

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What are the wounds that are showing up on the big fish

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What are the wounds that are showing up on the big fish

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The big wound showing up on the big fish are sea lamprey eating them.

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The big wound showing up on the big fish are sea lamprey eating them.

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Why are the sea lamprey eating the trout and other bigger fish.

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Why are the sea lamprey eating the trout and other bigger fish.

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There seems to be something called the sea lamprey that seems to be eating up all the lake trout, leaving large holes in lake trouts.

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is there a disease causing reproduction to not continue?

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Are too many of the female trout dying making it not able to reproduce?

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Are other organisms eating the trouts eggs ( takes 7 weeks for a trout egg to hatch)?

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Are the female trout not reproducing as much as they should be which is 800 eggs depending on her size?

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Is there a problem with the producers?

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Did other organisms relocate?

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No, sleeping is like a calorie preserve action.

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That depends on which type of trout fish we are talking about because rainbow trout live in freshwater but sea trout live in saltwater. So it really depends on which kind of the trout your are describing.

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There are a lot of orginism's in the pond or lake where the trout live. There could be a chance if the other orginisms are invading their part of the pond or lake and causing harm to them

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Is there to much of one gender?

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are the eggs in a good environment to hatch in?

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Is there to little of one gender?

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Yes other organisms are eating the trouts food an example is algae many organisms eat algae not just one.

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Yes other organisms are eating the trouts food an example is algae many organisms eat algae not just one.

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Do we get energy from sleep because on the third quiz in said we only get energy from food.

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Do we get energy from sleep because on the third quiz in said we only get energy from food.

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Yes more than one species or populations of other organisms are eating the trout two of those organisms are the Sea lamprey or the Freshwater drum.

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Yes more than one species or populations of other organisms are eating the trout two of those organisms are the Sea lamprey or the Freshwater drum.

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Are the trout in the wrong environment?

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does this have to do with global warming?

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Food shortage does lead to a decrease in population because if there is no food for the trout then what will the trout eat. Most of them will probably die so that will lead to a decrease in population.

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Yes it has since there has been contaminate in the lakes the lake trouts have inhabited

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Is pullution one of the reasons the trout's population is decreasing

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Is there more than one population of organisms eating the trout population?

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Is there a population decrease in their preys population making it to where the trout are decreasing?

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Are other organisms eating the trouts prey?

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Are the trout fish in the wrong environment?

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Is there a disease that they are catching from their environment?

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is their environment being taken over by other organisms?

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Have there been any oil spills in their habitat?

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Is there salt water going into their habitat

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Is their habitat being destroyed?

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Is the food they are eating decreaseing or being effected

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Is there food okay and save to eat or are infections or problems with the food they eat

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Is there a new strain of bacteria or virus killing them?

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Is there a new strain of bacteria or virus killing them?

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Is an invasive organism eating them or their food?

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Is an invasive organism eating them or their food?

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Yes other organisms are or can eat their prey. One example is a cow, cows eat grass but so do sheep, horses, deer, and a variety of other organisms.

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Yes other organisms are or can eat their prey. One example is a cow, cows eat grass but so do sheep, horses, deer, and a variety of other organisms.

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Is able to help increase population?

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Is there not enough food for the organisms?

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does food shortage lead to a decrease in population?

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Are other organisms eating their prey?

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How much do their predators eat a day?

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How much of their prey is left for them to eat.?