Question 1 (2 points) Invasive species have been successfully controlled in most regions using viral or bacterial agents an ecological problem in North America since the first European colonists arrived hunted to extinction in most places where they occur successfully controlled by the introduction of other alien species that are natural predators.

Invasive species have had a significant impact on North American ecosystems ever since European colonization, causing disruptions to native wildlife and plant populations. Many indigenous species have struggled to compete with these newcomers, leading to declines in biodiversity. This tumultuous introduction has altered food webs and ecosystems to an extent that some regions may never fully recover from. In the real world, invasive species management is a critical part of conservation efforts. One notable example is the introduction of the cactus moth to control the invasive prickly pear cactus in Australia. However, this approach can be a double-edged sword—introducing new species as biological control agents carries its own risks and may lead to unforeseen ecological consequences.