Species that have been introduced to a new habitat from another place in the world and have become pests are said to be

Rationale

Species that have been introduced to a new habitat from another place in the world and have become pests are said to be invasive.

Invasive species are those that are not native to a specific location and have a tendency to spread, which is often caused by human activities. These species can harm the ecosystem, economy, or even human health in their new environment.

A (commensal) YOUR ANSWER

Commensal organisms are those that benefit from another organism without causing it harm. This term is usually used in the context of symbiotic relationships, where one organism benefits while the other is neither helped nor harmed. In the case of introduced species that become pests, they typically harm their new environment rather than exist without impact, so they are not considered commensal.

B (predatory) YOUR ANSWER

Predatory species are those that hunt and eat other organisms. While some invasive species could potentially be predatory, not all are, and the act of predation does not inherently denote an invasive status. Being invasive relates more to the species' place of origin and impact on the new environment, rather than their feeding habits.

C (parasitic) YOUR ANSWER

Parasitic species are those that live on or in a host organism and cause it harm. Similar to predatory species, some invasive species can indeed be parasitic, but not all are. Again, the term invasive is more about a species' non-native status and harmful impact on its new environment.

D (invasive) CORRECT

Invasive species are those that are introduced into an area outside of their native distribution, often by human action, and that have a harmful impact on the new environment. They often outcompete native species for resources and can disrupt the balance of the ecosystem, making them pests.

Conclusion

Invasive species are those that are introduced to a new location, often by human activity, and cause harm to their new environment. They can disrupt ecosystems, cause economic damage, or pose a threat to human health. While they may also exhibit predatory or parasitic behaviors, not all do, and these behaviors alone do not define a species as invasive. Therefore, the term that best describes species that have been introduced to a new habitat from another place in the world and have become pests is "invasive".

Species that have been introduced to a new habitat from another place in the world and have become pests are said to be

Species that have been introduced to a new habitat from another place in the world and have become pests are said to be invasive.

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