Question

which of the following best describes an invasive species?
native plants or animals which grow at an exceptionally fast rate
native or non - native species found in nearly every terrestrial area
non - native species introduced to an area ultimately harming the ecosystem or human health
native plants which take up large areas of space and do not allow for other species to spread

Explanation:

An invasive species is defined as a non - native (alien) species whose introduction to an ecosystem causes or is likely to cause economic or environmental harm or harm to human health.

• The first option mentions native plants/animals. Invasive species are non - native, so this is incorrect.
• The second option about being found in nearly every terrestrial area is too broad and does not capture the key aspect of being non - native and harmful.
• The fourth option again refers to native plants. Invasive species are non - native.

Answer:

Non - native species introduced to an area ultimately harming the ecosystem or human health.