Which of the following biodiversity threats is matched correctly to its effect?

Question

Quizplus · Accepted Answer

Climate change is threatening the habitat of polar bears in the Arctic Circle. As sea ice is melting earlier in the year and forming later, polar bears have less time to hunt for food and are forced to swim longer distances, leading to increased mortality rates.

Answer: B
 Pollution has caused oyster reef populations to decline by 85%. Pollution can be caused by excess nutrients, toxic chemicals, and other harmful substances that can alter the composition of ecosystems.

Answer: A
 Overfishing has led to decreased population numbers of the Mekong River dolphin. Overfishing can impact all levels of the food chain, leading to imbalances and declines in species populations.

Answer: D
 Habitat fragmentation caused the Bramble Cay melomys to go extinct. Habitat fragmentation occurs when large habitats are broken up into smaller, isolated patches, leading to decreased genetic diversity and increased vulnerability to environmental disturbances.

Answer: E
 Invasive species can increase the vulnerability of elephants and tigers to poaching drives. Invasive species can outcompete native species for resources and cause ecological imbalances, leading to declines in native species populations.

Which of the Following Biodiversity Threats Is Matched Correctly to Its