Question:
Fill in the blanks with your best-estimated answer
“Invasive species are primarily spread by ______________”
Then shortly answer
Are there any environmental positives to invasive species?
Solution:
Invasive species are spread primarily by human activities. The people and possessions they use to travel around the world can be vehicles for non-native species in other territories, since these trips often bring with them uninvited species to other ecosystems.
Invasive species can affect nature's ability to provide ecosystem services, leading to increased economic costs and environmental damage. In fact, the impacts of invasive species on biodiversity are well established and can occur in all habitats. An example, there are native species that compete for resources with invasive species, affecting the entire ecosystem.
Then, the correct answer is:
1- Invasive species are primarily spread by HUMANS.
2- Are there any environmental positives to invasive species?
No, since invasive species can impact both the native species living within an ecosystem as well as the ecosystem itself.