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Factors that contribute to an increased likelihood of an anaerobic infection include: (select all that apply)

Which class in the U.S. is the largest, though it is decreasing in size because of changes in the economy?

CEO income has grown exponentially over the past four decades, but wage growth for the majority of Americans has remained stagnant.

Which of the following is true of life chances?

In the documentary Waiting for Superman, many students wanted to go to a better school than the one in their community.

The hidden curriculum:

True or False?  Most Americans stay in or near the class level they are born into.

India is an example of this type of system, where heredity determines the rank that people have in society.

Reliance on solid biomass fuel for cooking and heating exposes many children from developing countries to high levels of indoor air pollution. The article “Domestic Fuels, Indoor Air Pollution, and Children’s Health” (Annals of the N.Y. Academy of Sciences, 2008: 209–217) presented information on various pulmonary characteristics in samples of children whose households in India used either biomass fuel or liquefied petroleum gas (LPG). For 75 children in biomass households, the sample mean peak expiratory flow (a person’s maximum speed of expiration) was 3.30 L/s, and the sample standard deviation was 1.20. For the 78 children whose households used liquefied petroleum gas, the sample mean PEF was 4.25 and the sample standard deviation was 1.75.  Estimate the difference in PEF between children living in households using biomass fuel and liquified petroleum gas using a 90% confidence level.  Do we have reason to believe that children who live in households that use biomass fuel have lower PEF than children from LPG households?

The normal microbiota in the human body help the pathogens to flourish through symbiosis