An Invitation to Health Study Set 2

Nutrition

Quiz 19 :

A Healthier Environment

Quiz 19 :

A Healthier Environment

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You can protect your hearing by
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The exposure to the excessive noise by an individual for a period of time would cause hearing impairment. Excessive noise would obliterate the hair cells, which are used to amplify sound waves. The lack of auditory structures like hair cells would disable the function of transferring the auditory signals to brain.
Hence, the correct answer is(b)using foam earplugs when operating noisy tools or attending rock concerts.
Prolonged exposure to sound waves that are below 75 decibels would carry a low risk of permanent hearing loss. Hence, the option(a)avoiding prolonged exposure to sounds under 75 decibels is incorrect.
Sudden hearing loss may develop from exposure to a short burst of a loud sound. This type of hearing loss, which can be temporary(referred to as being a temporary threshold shift)or permanent(referred to as being a permanent threshold shift), is called acoustic trauma. There is an inverse relationship between the loudness of a sound and the amount of time needed for hearing loss to happen. More often, the eardrum is damaged in acoustic trauma. Hence, the option(c)limiting noise exposure to short bursts of loud sounds such as fireworks is incorrect.
An individual can protect his hearing by avoiding prolonged exposure to loud noises, wearing noise-cancelling headphones or ear muff style headphones while listening to music, and regular hearing checkups, among others. Hence, the option(d)drinking alcohol in noisy environments to mute the sounds is incorrect.

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An example of the concept of sustainability is
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Sustainability is the concept, by which a resource is harvested or used in a manner that prevents it from being depleted or permanently damaged. Wind is considered to be sustainable as it is created by differences in atmospheric pressure and created when an area becomes hotter than a nearby area. As a result of differences in absorption of solar radiation, Earth's surface causes air to move from a high pressure area to a low pressure area.
Hence, the correct answer is(c)using wind power to generate electricity.
There is a concept of food sustainability that may include concepts such as food supply security, a strong food industry, health, safety, affordability, quality, and environmental sustainability. Hence, the option(a)getting enough to eat at every meal is incorrect.
Lowering gas prices can have effects on the individual as well as the economy. Hence, the option(b)lowering the price of gas to 1990 levels is incorrect.
Sustainability is no the concept of maintaining our current levels of energy usage but used to prevent resource to get depleted. Hence, the option(d)maintaining our current levels of energy use is incorrect.

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Which of the following statements about air pollution is false ?
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As of 2014, the number of Americans who live in counties with unhealthy levels of either ozone or particle pollution is 147,600,000, which represents about 50% of the population of the United States of America. Particle pollution levels have decreased while ozone levels have increased.
Hence, the correct answer is(a)More than 80 percent of the people in the United States live in counties with unhealthy levels of ozone or particle pollution.
Remaining all other options are true as per the statement about air pollution.

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Mutagens
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Precycling is
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Pesticide risks to health include
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Drinking water safety
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How do you contribute to environmental pollution? How might you change your habits to protect the environment?
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Threats to the environment include
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Which of the following statements about climate change is true ?
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In one Harris poll, 84 percent of Americans said that, given a choice between a high standard of living(but with hazardous air and water pollution and the depletion of natural resources)and a lower standard of living(but with clean air and drinking water), they would prefer clean air and drinking water and a lower standard of living. What about you? What exactly would you be willing to give up: air conditioning, convenience packaging and products, driving your own car rather than using public transportation? Do you think most people are willing to change their lifestyles to preserve the environment?
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One of the most important things you can do to help protect the environment is
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An excerpt from a recent newspaper article stated, "Children living in a public housing project near a local refinery suffer from a high rate of asthma and allergies, and an environmental group says the plant may be to blame." The refinery has met all the local air quality standards, employs hundreds in the community, and pays substantial city taxes, which support police, fire, and social services. If you were a city council member, how would you balance health and environmental concerns with the need for industry in your community? What actions would you recommend in this particular situation?
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