The abundance of wildlife first attracted Russian and American fur traders in the early 1800s, who then nearly eliminated the seal population in the area. The islands then became an agricultural resource for San Francisco during the gold rush era when egg companies began harvesting bird eggs on the islands. In 1863, violence between viral egg companies erupted on the islands (known as the Egg War") which inadvertently attracted national attention and provoked lawmakers to pass legislation to protect and rehabilitate the island's natural ecosystem.
In 1881, an executive order was passed that decreed egging illegal on the Farallon's. This ended private enterprises on the islands was reinforced in 1909 when President Theodore Roosevelt created the Farallon Reservation to restore human access and preserve that northern island, and over time many of the island original inhabitants have returned.
The Farallon's are now home to the world's largest population of western gull. Seals have returned, as well as otters and sea lions, which in turn attracts great white sharks. The combination of sharks, underwater currents, and jagged coastline are probably what earned the Farallon's their nickname "Devil's Teeth," though it hasn't stopped a few adventurous people from swimming. Four people have completed the 30-mile swim from the islands to San Francisco; the fastest person completed the journey in 14 hours.
What is the main idea of the passage?
Humans disrupted the ecosystem of the Farallon Islands and played a role in restoring it.
The passage details the historical exploitation of the Farallon Islands by fur traders and egg companies, leading to significant ecological disruption. It also highlights legislative and conservation efforts that have contributed to the restoration of the islands' natural ecosystem, illustrating the dual impact of human activity on the environment.
This choice is misleading as it refers to past agricultural use during the gold rush era, particularly for bird eggs. The passage emphasizes the shift away from agricultural exploitation to conservation efforts, indicating that they are no longer primarily used for agricultural purposes.
While the passage does mention that the islands are home to the world's largest population of western gulls, it does not solely focus on this aspect. The main idea revolves around the broader theme of human impact—both negative and positive—on the ecosystem rather than solely the protection of gulls.
This choice accurately reflects the main idea of the passage. It discusses the initial ecological disruption caused by human activities, such as fur trading and egg harvesting, and the subsequent legislative actions that led to the restoration of the islands' natural ecosystem.
This statement is incorrect as the passage does not suggest that the ecosystem has always been unstable. Instead, it describes how human actions led to instability, followed by recovery efforts, indicating a change from instability to a more stable ecosystem through conservation.
The passage illustrates the complex relationship between humans and the Farallon Islands' ecosystem, emphasizing both the detrimental effects of exploitation and the positive outcomes of conservation efforts. Understanding this dual impact is crucial to appreciating the islands' current status as a restored habitat for various species, including the western gull.
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