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Why do populations change size in an ecosystem?

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Why do populations change size in an ecosystem?

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What caused the size of the moon jelly population in Glacier Sea to increase?

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A group of the same type of organism living in the same area

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All the living and nonliving things interacting in a particular area

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When something stays mostly the same over time

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When something becomes different over time

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A small part that is meant to show what the whole is like

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Within a population organisms are always being born and dying.

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A system can be stable even as things are being added to and removed from it. If the amount being added and being removed are not equal, then the system will change.

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If the number of births and deaths in a given time are equal, then the population size will be stable.

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What could have caused the births to increase or the deaths to decrease in the moon jelly population?

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The process of creating offspring

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A population that eats organisms from another population

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A population that is eaten by organisms from another population

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The ability to make things move or change

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A molecule that organisms can use to release the energy they need to survive

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Organisms need to release energy from energy storage molecules in order to reproduce.

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Organisms in consumer populations get energy storage molecules from eating organisms in resource populations.

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If there are more births than deaths in a given time, then the size of the population will increase. If there are fewer births than deaths, then the size of the population will decrease.

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The more energy storage molecules available to a population, the more the organisms in that population can reproduce.

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The larger the resource population, the more energy storage molecules are available for the consumer population.

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The larger the consumer population, the more energy storage molecules it will need. Therefore, it will eat more, causing more deaths in the resource population.

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Why do populations change size in an ecosystem?

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How could a population besides the zooplankton or sea turtles have caused the moon jelly population to increase?

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When two or more populations use the same resource, such as the same food source

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The result of one cause leading to an effect that causes one or more other effects

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Two populations can compete for the same resource population. A change to one of these populations affects the size of the other.

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The size of a population can be affected by any population that is connected to it in a food web, even if they are not directly connected.