What aspect of an organism makes it an invasive species?
a
It is from a different ecosystem.
b
It does harm and is introduced to the ecosystem.
c
It is harmful to organisms in all ecosystems.
d
It has no predators in the new ecosystem
.
The correct answer is b: It does harm and is introduced to the ecosystem.
Explanation: An invasive species is defined as a species that is not native to a specific ecosystem and causes harm to the environment, economy, or human health. This harm can include outcompeting native species for resources such as food and habitat, disrupting natural ecosystems, and potentially leading to the extinction of native species.
To determine which aspect of an organism makes it an invasive species, we need to consider the given answer choices.
Option a states that an invasive species is from a different ecosystem. While this is true, it is not the defining characteristic of an invasive species. There are instances where species can naturally expand their range into new ecosystems without becoming invasive.
Option c suggests that an invasive species is harmful to organisms in all ecosystems. However, invasive species usually impact specific ecosystems, not all ecosystems universally.
Option d states that an invasive species has no predators in the new ecosystem. While a lack of predators can contribute to the ability of an invasive species to thrive and spread, it is not the sole determinant.
Option b is the correct answer, as it correctly identifies that an invasive species does harm and is introduced to the ecosystem. The introduction of an invasive species can occur through human activities such as intentional or accidental release, escape from captivity, or as stowaways on ships or in cargo.
In conclusion, an organism is considered an invasive species when it does harm and is introduced to an ecosystem, causing negative impacts on the environment, economy, or human health.