4.1 Quiz

1. What is an ecosystem disruption?

• a. Any change that helps the natural balance of an ecosystem.
• b. Any change that disturbs the natural balance of an ecosystem.
• c. No changes to the environment.
• d. Only biotic changes to the environment.

2. ________ are changes in ecosystem factors over time.

• a. Ecosystem
• b. Resilience
• c. Population
• d. Ecosystem dynamics

3. The ability of an ecosystem to recover from disruption is known as ...

• a. Dynamic
• b. Diversity
• c. Resiliency
• d. Competition

4. What is the species called that is non-native or alien to an ecosystem?

• a. Native species
• b. Keystone species
• c. Invasive species
• d. Ocean species

5. The introduction of invasive species to an ecosystem can change the dynamic of the ____________ among the species.

• a. mutualism
• b. interactions
• c. resilience
• d. disturbance

6. The cutting down of trees without replanting new ones is known as...

• a. pollution
• b. natural disaster
• c. deforestation
• d. invasive species

7. Choose which is NOT an example of a human-caused event that can disrupt the natural balance of an ecosystem.

• a. forest fire started by a careless camper
• b. deforestation
• c. volcanic eruption
• d. introduction of a non-native species

8. On February 3, 2023, five trains carrying hazardous chemicals derailed in East Palestine, Ohio. About 3,500 fish across 12 species have died in creeks and streams near the incident. Citizens are also concerned about air quality after inhalation of smoke and reports from humans detailing itchy rashes and breathing difficulties. What type of disruption would this be considered?

• a. pollution
• b. volcano
• c. deforestation
• d. invasive species

9. Even though officials report no contamination after the five train derailments, should we continue to monitor the environment and its effects on humans?

• a. yes
• b. no

10. A physical disruption to an ecosystem occurred when a highway was built through a forest. Which of the following would provide evidence that the addition of a highway to this forest affected populations?

• a. The amount of water runoff from higher elevations increased after the highway was built.
• b. The trees that were not cut down during the construction of the highway continued to grow.
• c. There were fewer species of nesting birds living in the forest after the highway was built.
• d. A greater area of the forest floor was exposed to the sunlight after the highway was built.