Discuss the positive and negative arguments currently being used in regards to immigration in the United States
What will be an ideal response?
Answer: Critics of immigration question whether the United States should continue to even allow immigration. Some argue that immigrants take jobs away from Americans and others are simply biased against foreigners. Some people argue that immigrants, whether legal or illegal, cost Americans money for public services such as health care and education. These arguments have become heated as the immigrant share of the population rises, as many Americans have become concerned with securing U.S. borders since September 11, 2001, and as the number of immigrants in the country increases.
Others counter that immigrants contribute to U.S. economic growth. The National Academy of Sciences concluded in 1997 that immigration does produce substantial economic benefits for the United States as a whole. Immigrants and their children will make up the labor force to support the growing number of pensioners currently residing in the United States and those who will be retiring within the next 10 years.
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Which mineral property is the least useful for identifying minerals and why?
Color is the least useful property for identification because it is the most obvious property. Streak is the least useful property for identification because the same mineral type can be found with several different colors of streak caused by impurities in the mineral. Color is the least useful property for identification because the same mineral type can be found in several different colors as a result of impurities in the mineral. Streak is the least useful property for identification because it does not work for minerals with metallic lusters. Density is the least useful property for identification because different specimens of the same type of mineral can vary in size.
The continuous branch of Bowen's reaction series contains the mineral
A. pyroxene B. amphibole C. biotite D. plagioclase
Baroreceptors perform which of the following functions?
A) send signals which control fluid pressure in the brain B) send signals which control the heart rate C) send signals which control the rate of breathing D) none of these
Which of the following is TRUE about top predators?
A) They are likely to be producers. B) Their removal increases biodiversity. C) They are likely to be herbivores. D) They include bacteria and fungi. E) They are often keystone species.