Biotic and Abiotic Factors in Ecosystems

What does 'biotic' refer to?

• Non-living things

• Living things

• Rocks and minerals

• Water bodies

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What is an example of an abiotic factor?

• Wolves

• Trees

• Bacteria

• Temperature

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Why were wolves kept in enclosures before being released in Yellowstone?

• To study their behavior

• To allow them to adapt to the environment

• To prevent them from escaping

• To train them

What causes global warming according to the video?

• Decrease in wolf population

• Increase in atmospheric carbon dioxide

• Decrease in snowshoe hare population

• Increase in elk population

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What is a biofilm?

• A type of antibiotic

• A type of bacteria

• A layer of slime created by bacteria

• A liquid flow

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What makes biofilms difficult to treat with antibiotics?

• They are not alive

• They are too small

• They create a protective layer

• They move too quickly

What are planktonic bacteria?

• Bacteria that form biofilms

• Bacteria that are inactive

• Bacteria that are attached to a surface

• Bacteria that float freely

Why are biofilms a concern for chronic wounds?

• They are visually appealing

• They prevent antibiotic treatment

• They have no effect on wounds

• They cause immediate healing

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What is the primary food source for the Canada lynx?

• Red fox

• Beavers

• Snowshoe hare

• Elk

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What happens to the lynx population when the snowshoe hare population decreases?

• It stays the same

• It has no effect

• It increases

• It decreases

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