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Yes there is. The invasive species is called Sea Lamprey

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The Lake trouts are in the great lakes

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Sea Lamprey Feeding on a Fish

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Classifications

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The sea lamprey is making the lake trout population decline form parasite host relationaship

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The sea lamprey is sticking to them and sucking their blood.

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The sea lamprey are the invasive species in the Great Lakes

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The sea lamprey is a parasitic lamprey native to the Northern Hemisphere.

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How much lake trout have died from sea lamprey compared to other animals?

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Was their an organism that was eating the sea lamprey, but are not anymore?

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What would happen is the population of sea lamprey increase?

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Are they around the same place in Lake Michigan where the Lake Trout are?

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What do sea lamprey eat

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What are sea lamprey?

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Yes,without food the lake trout can't reproduce because food is energy.

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Does there environment make there food source die ?

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Is the water they are swimming in too cold or too warm?

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lake trout insides

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How long does it take to lay the eggs?

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Are the Lake Trout getting hurt and getting wounds that they cant survive?

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DId the population of the food,the lake trout eats,decrease

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Is the temperature
of there environment rising?

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Is the fish that they eat swimming away from them ?

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Is there a new species that is now eating the Lake Trout?

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Is the predators of the Lake Trout eating a lot of Lake Trout?

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They eat crayfish,shrimp,small fish,insects

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Is other organisms around them eating them or hurting a large portion of their population?

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Is something happening in their predators environment? For example: Global Warming? Natural Disasters?

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Lake Trout eat crayfish, midges, algae, shrimp, and other invertebrates

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How much do they eat?

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How many organisms do they eat

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Is the alage affecting all the food?

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Is something happening to the crayfish population?

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What do crayfish eat?

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Is there a chain of animals good declining? Like one animal starves and there food starves too in there environment?

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Is the population of the food their eating declining?

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Is the food/ other organisms that they are eating poisoned?

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Does there environment have too many producers and consumers?

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Is the food being poisne

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Is there a genetic mutation?

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Are the Lake Trout the invasive species?

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Is there an invasive species

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How big is the fishing industry

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Has a certain gender declined?

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Is there pollution that is spreading to the great lakes?

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How many and what organisms eat Lake Trout ?

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How many newborn trout survive their first year?

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How many fish are in their environment per lake?

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Where do they mate?

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Do people eat Lake Trout?

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Does their food have something bad in it for them?

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Where do lake trout lay their eggs?

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Does there environment produce what they need?

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How many births do lake trout give at a time?

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Is there an infection in the lake water?

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What do they eat if the food they eat is gone?

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Does there environment effect how they live?

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What do they eat?