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EOC - Biodiversity and Conservation

Last updated almost 5 years ago

8 questions

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Question 1

1.

Which region would likely have the greatest amount of biodiversity?

A cave region with one ecosystem, which supports small populations of many different species.

A grassland region with one ecosystem, which supports very large populations of a few different species.

A mountainous region with two ecosystems, each of which supports a few different species.

A coastal region with three ecosystems, each of which supports many different species.

Question 2

2.

Corals, and the zooxanthellae algae they contain, form the base of a coral reef ecosystem. Organisms like sea urchins feed on microorganisms that grow on the corals. Organisms including seahorses feed on plankton and fish that also inhabit the reef. Larger animals like sea turtles frequently enter the reef to forage. Seaweeds, which are competitors of corals, may grow along the reef bottom.
The biodiversity in a coral reef ecosystem can be changed by both natural and human activities. What is a natural factor that would have the greatest negative impact on the ecosystem's biodiversity?

A sudden increase in the harvesting of corals, which decreases the coral population in the reef.

A decrease in the level of inbreeding in several seahorse populations in the reef.

The immigration of several new populations of sea urchins into the reef.

The overgrowth of a population of seaweed, which prevents light from reaching the reef.

Question 3

3.

Wheat crops are grown in a field. The seeds are genetically identical. Which of the following is the most likely effect of planting an entire field with these seeds?

The population will have high biodiversity.

The population will have high genetic variation.

The population will be resilient to environmental changes.

The population will be limited in how it adapts to changes.

Question 4

4.

How is the changing balance of cost to benefits helping to speed the development of hybrid motor vehicles that utilize both gas and electrical motors?

Gasoline motor vehicles are reaching higher top speeds.

Hybrid motor vehicles are developed with less powerful engines.

Gasoline motor vehicles are being designed with improved mileage.

Hybrid motor vehicles are getting cheaper and the price of gasoline is increasing.

Question 5

5.

Wind farms use turbines to generate electricity without using fossil fuels. What is one negative consequence of using wind turbines to generate electricity?

https://scitechdaily.com/wind-farms-cause-more-environmental-impact-than-previously-thought/

https://physicsworld.com/a/wind-turbine-impacts-deplored/

https://www.audubon.org/news/can-painting-wind-turbine-blades-black-really-save-birds

Wind turbines change global weather patterns.

Wind turbines produce excess carbon dioxide.

Power is produced by wind farms using a nonrenewable resource.

Developing and maintaining wind farms damages ecosystems.

Question 6

6.

Students were investigating the advantages and disadvantages of solar power. According to the information in the chart, which statement describes an advantage of using fossil fuels over solar power?

Fossil fuel stations require less maintenance than solar panels.

Fossil fuels are less costly to obtain.

Fossil fuels are an abundant renewable resource.

Fossil fuels are available regardless of the weather.

Question 7

7.

In winter, Monarch butterflies migrate to forests that have relatively warm winters. The butterflies are still sensitive to cold, however, and they hibernate on tree branches, bunched together to conserve heat. Which environmental regulation would directly preserve the monarch butterfly population in winter?

Limit the number of trees cut down for timber in butterfly winter habitats.

Require landowners to plant gardens and flowers in yards to attract butterflies.

Tag the butterflies to better monitor how far they migrate and how long they hibernate.

Plant more trees in the butterflies' summer habitats so they do not have to expend energy on migration.

Question 8

8.

Wild horses called mustangs roam acres of federally owned land in the western United States. These horses have overgrazed the local vegetation to the extent that plants and soils are being lost entirely.
When the number of mustangs that roam the land exceeds the number of horses that the land can sustain, the government organizes helicopter-driven roundups. The horses are guided into a roped-off area and then are sold to the public or brought to pastures in the Midwest. About one percent of the horses captured die from injuries or accidents that occur during roundups.
The risk to the horses during roundups compared to the entire loss of plants and soils is considered

direct harvesting

a trade-off

selective breeding

a technological fix