This topic contains a solution. Click here to go to the answer

Author Question: Describe the new Mercury and Air Toxics Standards and the impacts they will have on industry and on ... (Read 37 times)

ARLKQ

  • Hero Member
  • *****
  • Posts: 571
Describe the new Mercury and Air Toxics Standards and the impacts they will have on industry and on human health.
 
  What will be an ideal response?

Question 2

What is meant by the demographic transition? Relate the epidemiologic transition and fertility transition (two elements of demographic transition) to its four phases.
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

millet

  • Sr. Member
  • ****
  • Posts: 354
Answer to Question 1

Require all coal- and oil-fired power plants to limit their emissions of mercury, acid gases, and other metallic toxic pollutants, preventing 90 of the mercury and 88 of acid gases from being emitted. This will cause industry to seriously reassess its contamination of the environment. Since mercury pollutants are so devastating to humans (neurologically), the reduction of mercury pollution in the environment will have important benefits to human health.

Answer to Question 2

The basic premise of the demographic transition is that there is a causal link between modernization and a decline in birth and death rates. There are four phases of the demographic transition, as seen in the developed world. Phase I is a stable population size due to high death rates and high birthrates. In Phase II, the crude death rate drops but crude birthrates remain unchanged, resulting in increased population size. When a drop in crude birthrates begins, due to a drop in fertility rate, Phase III of the demographic transition has been reached. The population size is still increasing in Phase III. Phase IV occurs when the number of births equals the number of deaths and there is no growth in population size. The epidemiologic transition is the change in mortality factors from epidemics (acute illnesses) to chronic conditions (cancer and cardiovascular disease). The fertility transition is the decline in birthrates from a high of 40 to 50 per thousand to 8 to 12 per thousand. The fertility transition does not happen at the same time that the epidemiologic transition occurs; the fertility transition is delayed, as compared to the epidemiologic transition, by decades or more. This has resulted in the very large increase in human populations. The epidemiologic transition begins in Phase II, while the fertility transition begins during Phase III of the demographic transition.




ARLKQ

  • Member
  • Posts: 571
Reply 2 on: Jul 15, 2018
:D TYSM


diana chang

  • Member
  • Posts: 288
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

For a complete list of videos, visit our video library