Why is it useful to know the background level of extinction? -Scientists want to see if increased extinction rates will threaten human population.
-It is part of the scientific process to observe changes in nature.
-NOAA and FWS are required by law to compare background rates to current rates.
-If current rates greatly exceed background rates, scientists say there is a chance of a mass extinction event happening.

In the compound republic of america, the power surrendered by the people is first divided between two distinct governments, and then the portion allotted to each subdivided among distinct and separate departments. hence a double security arises to the rights of the people. the different governments will control each other, at the same time that each will be controlled by itself.—madison, number 51 based on the quote, which of the following statements would madison have likely supported? development of political parties is necessary to ensure the security and stability of a democratic government. a government must have enough power to govern however, its power must also be limited by creating multiple branches within it. one government can not carry out the will of the people alone, therefore the establishment of two separate governments is necessary. a government must sometimes limit civil liberties of individuals to ensure the safety and security of all citizens.

Bonus question: according to wikipedia, in chinese philosophy yin and yang "describes how seemingly opposite or contrary forces may actually be complementary, interconnected, and interdependent." what are some examples from the story that amy tan may have intentionally incorporated elements of yin and yang philosophy into this story? select 2.

Based on what you read in the fact sheet, identify the type of customer the company is hoping to reach. super-phonic systems wants to sell phones to customers who: expect the latest smartphone technology. need affordable phone service in remote areas. care more about attractive designs than reliability. will pay top prices for features such as web-surfing.