Human Impacts on the Environment GA Biology

When taken to a new habitat, non-native plants often threaten native plants of the new habitat.  Why do they do this?

• Non-native plants are able to mutate rapidly
• Non-native  plants cause native animals to relocate
• Non-native plants are able to be used for medicine
• Non-native plants compete with native plants for resources

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What do invasive species do to the biodiversity of their ecosystem?

• They increase biodiversity by adding to the population

• They decrease biodiversity because they deprive other organisms, which will cause them to die out

• They increase biodiversity by taking away niches of other organisms

• They decrease biodiversity by adding new niches to the ecosystem

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Which would be the best solution for controlling the spread of an invasive species in an ecosystem?

• Allowing the invasive species to spread naturally so it becomes part of the ecosystem over time.

• Providing additional food and shelter for native species to help them compete with the invasive species

• Removing all plants and animals from the ecosystem to prevent the invasive species from spreading further.

• Introducing a random predator from another ecosystem to reduce the invasive species' population, without researching its effects on native species.

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The introduction of chemical, physical, or biological agents into the water.

• water pollution

• thermal pollution

• biomagnification

• artificial eutrophication

How can eutrophication be harmful to an aquatic system?

• It is not harmful, more nutrients are good for an aquatic system

• It is harmful because more nutrients cause plants to die

• It is not harmful, nutrients allow more plants to grow, creating more food for fish

• It is harmful because more nutrients cause more plants to grow, depleting the amount of dissolved oxygen in the water

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What is one simple and effective way to prevent or remove eutrophic lakes?

• Add more fertilizers to your lawn

• Reduce the amount of fertilizer you put on your lawn

• Remove plan buffer zones

• None of the above

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What are fossil fuels?

• Dinosaur bones
• Resources made from once living organisms 
• Combination of different rocks
• Gas Stations

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Why is burning fossil fuels harmful? 

• then we won't have any fossil fuels if we burn them all
• They can get extremely hot
• Increases the amount of greenhouse gases in the air
• this would destroy fossils

What is a greenhouse gas?

• a gas created from a plant
• gas that causes the atmosphere to get warmer
• a green colored gas
• a gas that kills you right away

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Fossil fuels are a _______________________.

• renewable resource

• unknown resource

• nonrenewable resource

• new resource