Ward's World + McGraw Hill's AccessScience

Ward's World+MGH Endangered Species_Teacher Key

Issue link: https://wardsworld.wardsci.com/i/1411484

Contents of this Issue


Page 0 of 0

Endangered Species: Test Your Understanding + ward ' s science What is the single greatest threat to species around the globe? Habitat destruction is the single greatest threat. What is an invasive species? Invasive species are species that, when introduced to a new range or environment, will establish them- selves and outcompete native species. What international strategies are in place to protect endangered species? The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) protects endangered species from trade that depletes populations in the wild. In addition, the International Union for Conservation of Nature and Natural Resources (IUCN) identifies which species are in danger of extinction, and initiates international programs to protect those species. Critical Thinking: Which environment would you expect to have the highest number of endangered spe- cies: a desert island or a continental tropical rainforest? Why? Sample answer: Although islands are associated with large numbers of rare species, a tropical environ- ment would have more natural resources and environments to support a variety of habitats and spe- cies, and thus have a higher species diversity than in desert environments. Thus, a tropical rainforest would be likelier to have more endangered species than a desert island. Critical Thinking: Could an endangered species ever be considered an invasive species? Why or why not? Sample answer: Most likely, no. Endangered species are defined by their low numbers and limited regions that support their existence, while invasive species thrive in many different environments and often prey on endangered species. Critical Thinking: How might designated parks or green spaces within urban environments help protect native species in that area? Sample answer: If parks or undeveloped spaces designated for species are maintained, it could allow for greater species survival. However, human endeavors must be monitored in these regions to prevent unforeseen human-caused impacts to the residing species.

Articles in this issue

Archives of this issue

view archives of Ward's World + McGraw Hill's AccessScience - Ward's World+MGH Endangered Species_Teacher Key