Ecological Balance and Wildfires Quiz

Which of the following does NOT support the benefit of planned fires in maintaining ecological balance in Canada’s Temperate forests?

• Planned burns clear underbrush and allow fire-tolerant plants to survive.

• Planned burns help maintain ecological balance by allowing fire-resistant plants to survive and thrive.

• Planned burns benefit certain species like the wild lupine, which depend on fire to reduce competition.

• Planned burns benefit ecosystems by destroying fire-resistant plants, reducing biodiversity.

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Low-severity fires (increase / decrease) competition for sunlight for fire-tolerant trees, which (increases / decreases) their chances of survival in the forest.

• Low-severity fires decrease competition for sunlight for fire-tolerant trees, which increases their chances of survival in the forest.

• Low-severity fires increase competition for sunlight for fire-tolerant trees, which decreases their chances of survival in the forest.

• Low-severity fires increase competition for sunlight for fire-tolerant trees, which increases their chances of survival in the forest.

• Low-severity fires decrease competition for sunlight for fire-tolerant trees, which decreases their chances of survival in the forest.

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Based on the graph, identify the trend in forest fires since 1983.

• The areas burned by forest fires have increased.

• The areas burned by forest fires has decreased.

• The areas burned by forest fires has stayed the same.

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Which of the following statements are TRUE regarding the impacts of large wildfires on nearby communities? (Select two answer choices).

• Large wildfires can negatively affect water quality and soil stability.

• Wildfires only impact ecosystems and do not affect human communities.

• Communities near frequent wildfire areas tend to experience worse air quality.

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Fires caused by deforestation and land clearing in Canada harm or cause animals to leave the area. What is the most likely result?

• A. Biodiversity will decrease as habitats are destroyed.

• B. Biodiversity will increase as fires encourage the growth of new plant species and regeneration.

• C. Biodiversity will not be impacted as species quickly adapt to new habitats.

• D. Biodiversity will decrease as human populations expand into previously forested areas.

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What environmental role does the Canada lynx play in its ecosystem?

• A. It helps increase plant diversity.

• B. It controls the rabbit population.

• C. It pollinates flowers and plants.

• D. It provides food for smaller predators.

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Due to the fur trade the lynx population has (increased / decreased), this has caused the rabbit population to (increase/decrease), leading to (more/less) competition for plant resources.

• decreased, increase, more

• increased, decrease, less

• decreased, decrease, less

• increased, increase, more

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Which statements best explain the impact of too many rabbits on the ecosystem?

• A. An increase in rabbit populations leads to overgrazing of plants.

• B. More rabbits help maintain the balance of plant and insect life.

• C. An increase in plants provides more food for rabbits.

• D. Fewer rabbits result in more food for lynx and songbirds.

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What would likely happen to insect populations if rabbit populations become too high and plants begin to decline?

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Why is it important to protect lynx populations in order to maintain ecosystem balance?

• Lynx are the only predators of rabbits in the ecosystem.

• Lynx promote the growth of plants through grazing.

• Lynx consume the plants predators.

• Lynx provide shelter for other animals in the forest.

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