Endangered Species And Fisheries Quiz! Trivia

The statement is true because human activities such as deforestation, pollution, habitat destruction, and climate change have significantly contributed to the current mass extinction event. These activities have led to the loss of numerous species and their habitats, disrupting ecosystems and causing irreversible damage to the planet's biodiversity. The impact of human actions on the environment has been so severe that scientists have labeled it as the 6th mass extinction, with species disappearing at an alarming rate.

Coral reefs are indeed built by tiny invertebrate animals called coral polyps. These polyps have a symbiotic relationship with algae called zooxanthellae, which live inside their tissues. The polyps provide a protected environment and nutrients for the algae, while the algae provide the polyps with food through photosynthesis. This mutualistic relationship allows the coral polyps to build calcium carbonate skeletons, which form the structure of the coral reef. Therefore, the statement "They are built by tiny invertebrate animals that have a symbiotic relationship with algae" is true.

The correct answer is "all of the above." This means that all three options mentioned - dams blocking their path to breeding grounds, overfishing, and water diversion for irrigation - are reasons why many salmon species have gone extinct. Dams can prevent salmon from reaching their spawning grounds, overfishing reduces their population, and water diversion can disrupt their habitat and access to necessary resources. All of these factors combined have contributed to the decline and extinction of various salmon species.

Restoring the native habitat and protecting it is the best long-term strategy for saving an endangered plant species because it addresses the root cause of the species' decline. By restoring the habitat, the plant can thrive in its natural environment, ensuring its long-term survival. Additionally, protecting the habitat from threats such as deforestation or pollution helps to safeguard the plant from further harm. This approach not only benefits the endangered plant species but also promotes the conservation of other species that depend on the same habitat.

Whales are vulnerable to extinction due to a combination of factors. Firstly, they are K-selected species, which means they have a low reproductive rate and long gestation periods, making it difficult for their populations to recover quickly. Secondly, their migration patterns expose them to various threats such as habitat loss, pollution, and collisions with ships. Lastly, their oils, which are valuable to humans, have led to historical overhunting and exploitation. Therefore, all of these factors contribute to the vulnerability of whales to extinction.

The Magnuson Act, officially known as the Magnuson-Stevens Fishery Conservation and Management Act, allows the USA to patrol the ocean within 200 miles of the coast and set fisheries quotas. This act was enacted in 1976 to protect and manage marine resources in US waters. It established the Exclusive Economic Zone (EEZ), which extends 200 nautical miles from the coast, giving the USA jurisdiction over these waters. The act also mandates the establishment of regional fishery management councils to develop and implement conservation and management measures for fisheries in the EEZ.

The spotted owl is a species that requires an old-growth forest of the Pacific Northwest. This type of forest provides the necessary habitat for the owl, as it relies on large, mature trees for nesting and roosting. The old-growth forest also supports the owl's prey, such as small mammals and birds. Therefore, the spotted owl is dependent on the existence of these specific forest conditions for its survival.

The correct answer is "A species survival is more important than human economic interests." This is not a provision of the Endangered Species Act. The Act does prioritize the protection and preservation of endangered species, but it also takes into consideration the economic impact and interests of humans. The Act allows for a balance between conservation efforts and economic development, ensuring that both are taken into account when making decisions regarding endangered species.

Habitat destruction is the number one reason for anthropogenic species extinction. When natural habitats are destroyed or altered by human activities such as deforestation, urbanization, or pollution, it disrupts the delicate balance of ecosystems and directly impacts the survival of many species. Loss of habitat leads to loss of food sources, shelter, and breeding grounds, making it difficult for species to survive and reproduce. This ultimately results in the extinction of species as they are unable to adapt or find suitable environments to thrive in.

Trawling is the correct answer because it involves dragging a large net along the ocean floor, which can cause significant damage to the coastal ocean ecosystems. This fishing technique can destroy habitats, disrupt the seabed, and result in bycatch of non-target species. Trawling can also lead to overfishing and depletion of fish populations, further impacting the balance and health of the coastal ocean ecosystems.

The whooping crane in the US has been successfully recovering through a unique method of retraining. They were taught to migrate by following an airplane, which has helped in their population growth and conservation efforts. This approach has proven to be effective in ensuring their survival and increasing their numbers.

Aquaculture, the farming of aquatic organisms, has indeed caused the destruction of mangrove forests. Mangroves are often cleared to make way for aquaculture operations, resulting in the loss of valuable coastal ecosystems. Additionally, aquaculture has been associated with an increase in the spread of sea lice. These parasites can infest farmed fish and spread to wild fish populations, causing harm to both. Furthermore, the practice of aquaculture could potentially lead to an increase in invasive fish species. Introducing non-native species into new environments can disrupt ecosystems and have negative ecological impacts.