Section 5.3 questions

* not completed

. The black rat is one of the first invasive species. It originated in tropical Asia, reached Europe in the first century CE, and spread around the world, hiding on European ships. This animal became an invasive species through which of these methods or sources?

European colonization correct incorrect

Accidental transport correct incorrect

Biological control correct incorrect

Agriculture/horticulture/aquaculture correct incorrect

* not completed

. In Cuba, dogs are considered an invasive species. In Florida, 90 miles away, they are not. Why might dogs be more damaging to Cuban ecosystems than to Florida ecosystems?

Cuba is south of Florida; it is more tropical and its ecosystems more fragile. correct incorrect

Cuba is smaller than Florida; it has less room to maintain new species. correct incorrect

Cuba's native species are trapped on an island and less adapted to withstand invaders. correct incorrect

Dogs are better able to survive in Cuba than in Florida, thus they pose a greater risk there. correct incorrect

* not completed

. Scientists are most alarmed by which characteristic of GMOs?

Their ability to form crossovers between unrelated species correct incorrect

Their ability to become toxic if allowed to grow wild correct incorrect

Their ability to increase crop productivity correct incorrect

Their ability to become the source of new medicines correct incorrect

Submit Quiz