Self paced: carrying capacity

Ecology -the study of the interaction between organisms and their environment

Biotic factors include living factors that can affect populations in an ecosystem. This includes:

Other organisms (plants/consumers).

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​Biotic Factors

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Abiotic Factors include anything in an environment that is considered nonliving.

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Abiotic Factors

Multiple Select

Choose all the abiotic factors listed

• water

• mates

• space

• temperature

• predators

Multiple Select

Choose all the biotic factors listed

• sunlight

• food

• predators

• disease

• water

Multiple Choice

What abiotic factor would plants compete for?

• Food

• Sunlight

• Parasites

• predators

For any population to thrive, there must be enough food, water and liviing space. These are called limiting factors because they limit how many organisms can live in an environment.

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Limiting Factors

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How do Ecosystems Change Over Time?

• Succesion-the series of changes that take place in a community as it gets older

Multiple Choice

If the population of a certain predator increases, there is often _______ its prey

• a decrease the population of
• an increase of the population of 
• great news for its prey of
• no  impact found on

Multiple Choice

A group of elephants gets stuck in mud at the edge of the river from a recent mud slide. A lion waits for an elephant to get tired before it attacks. What is the limiting factor to the elephant population?

• Predator-Prey Relationships

• Natural Disaster

• Herbivory Effect

• Competition

Multiple Choice

If there is more food than usual in an ecosystem, then...

• Populations will stay the same
• Populations will decrease
• Populations will increase

Multiple Choice

If there was a wildfire in the forest that destroyed the plant life, what would happen to the herbivore population?

• Herbivores would decrease due to a lack of food

• Herbivores would increase due to an increase of food

• Herbivores would not be affected

• Herbivores would decrease due to an increase in predators

Multiple Choice

What is a population?

• All the organisms living in an area

• The living and non-living organisms in an area

• A group of the same species living in an area

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The largest population an environment can support.

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Carrying Capacity

Multiple Choice

What happens if a population grows past its carrying capacity?

• The population keeps growing

• The population starts to die off

• The entire species will go extinct

• The carrying capacity just increases

Multiple Choice

What is the carrying capacity of the graph?

• 1000

• 8000

• 800

• 600

Multiple Choice

Which of the following would INCREASE the carrying capacity of an ecosystem?

• increase in predators
• disease
• increase in available food
• drought

Multiple Choice

Two arctic fox are fighting with a polar bear for a sea lion carcass. One fox distracts the bear while the other eats. What type of limiting factor is the polar bear?

• Predator-Prey Relationships

• Competition

• Herbivory Effect

• Weather

Multiple Choice

What is the carrying capacity for this sheep population?

• 1.8 million
• 1.25 million
• 1.6 million
• 1.o million

Multiple Choice

When the death rate rises and the birth rate lowers...

• population increases

• population decreases

• population stays the same

• all of these

Multiple Choice

Which of the following would likely be a limiting factor to a population?

• Abundance of food

• Living near a water source

• Presence of a natural predator

• Multiple sources for shelter

Multiple Choice

What happens if a population goes over its carrying capacity?

• It will continue to grow

• It will eventually decrease due to a lack of resources

• It will die immediately

• It will get unlimited resources