"a genetically modified pig, nicknamed the “enviropig,” has the ability to produce a bacterial enzyme in its saliva that reduce the amount of phosphorus in its wastes. phosphorus pollution is a serious environmental concern. enviropigs are expensive, but the cost is balanced against the benefit to the environment. there is also a concern that the us department of agriculture still has not cleared enviropig meat for human consumption.

government agencies and citizens should propose the use of enviropig in the future only after
(1)developing ways to remove the bacterial enzyme
(2)assessing risks, costs, and benefits
(3)people have eaten lots of enviropig meat and determined the effects
(4)a different, cheaper pig can be produced regardless of the output of phosphorus"

How does land development destroy ecosystems? it increases human carrying capacity too rapidly. it converts them into residential or agricultural areas. it forces humans to import non-native plants and animals. it expands the natural range of native wildlife species.

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

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.