In 1859, two dozen rabbits were introduced to Australia. By 1953, there were an estimated one billion rabbits in Australia. The addition of the rabbits to this established ecosystem caused many problems, including a huge decrease in native plants. This left little food for native animals. Evaluate the effects of the introduction of the rabbits on the ecosystem. A) The genetic diversity improves an established ecosystem. B) The importation of genetic variation leads to the formation of a new species. C) The introduction of non-native species, with no known predators, upsets a balanced system. D) Changing in one part of an ecosystem does not affect other parts of the ecosystem

Describe two recent or ongoing space missions.

The nursing instructor has been observing nursing students initiate an iv infusion. which action(s), if made by the nursing student, indicates that further instruction is needed? (select all that apply.) the nursing student:

Awoman whose sister tested positive for a specific mutation in the brca1 gene, which increases the risk for breast and ovarian cancer, is found not to have that mutation but does have a mutation of unknown significance near the known mutation site. how should this woman be counseled? select one: a. she should be informed that her risk for breast cancer is greater than the general population but not as great as her sister’s risk. b. she should be informed that because she does not have the mutation, her risk for breast cancer is not greater than that of the general population. c. she should be informed of her gene mutation status and be presented with all the available prophylaxis options and reconstruction options. d. she should be informed that she does not have the specific mutation but that because another mutation is present she should be vigilant about screening