Remake of Populations & Resources by Michael Bauer

Unit Question:

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Why do populations change size in an ecosystem?

Population

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

Ecosystem

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All the living and nonliving things interacting in a particular area

Chapter 1 Question:

bauermichael — 2024-04-15 14:48:54 UTC

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

Key Concept 1:

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Within a population organisms are always being born and dying.

Stability

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When something stays mostly the same over time

Key Concept 3

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

Change

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When something becomes different over time

Key Concept 4

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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.

Key Concept 2:

bauermichael — 2024-04-17 15:02:22 UTC

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.

Sample

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

Chapter 2 Question:

bauermichael — 2024-04-23 14:53:55 UTC

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

Reproduction

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The process of creating offspring

Key Concept 7

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

Key Concept 6

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

Consumer population:

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A population that eats organisms from another population

Resource population:

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A population that is eaten by organisms from another population

Key Concept 5

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

Energy

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The ability to make things move or change

Energy Storage Molecule

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

Key Concept 8

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

Unit Question:

bauermichael — 2024-04-26 14:29:07 UTC

Why do populations change size in an ecosystem?

Key Concept 9

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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.

Unit Question:

bauermichael — 2024-05-07 14:35:34 UTC

Why do populations change size in an ecosystem?

Competition

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

Indirect effect

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

Key Concept 10:

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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.

Chapter 3 Question:

bauermichael — 2024-05-07 14:39:12 UTC

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

Key Concept 11

bauermichael — 2024-05-08 14:39:38 UTC

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.