<span>You need to include the text if you want people to be able to answer this sorry.</span>
Hello. You did not provide the article to which this question refers, which makes it impossible for it to be answered accurately. However, I will try to help you in the best possible way.
It is only possible to know the central idea of an article by reading the article. Generally, this main idea is exposed in the first paragraphs, as it allows the reader to understand the subject that will be approached. This is because the central idea is the main subject to which the article wishes to discuss and argue. Therefore, to answer your question you will need to find this subject in the article.
Answer:
3. After
Explanation:
The best suitable word to be inserted into the blank (A) is "After".
The word 'after' can be used as a preposition, adverb and a conjunction. 'After' can be used as a preposition when it is followed by a noun in the sentence.
In the context, the word "after" is the best suitable word and it is used as a preposition as it is followed by the word 'approval' which is a noun.
C) People who are loved and cared for are strong and happy
When Mary first meets Colin, he is shut away in his room. While he has visitors that attend to his needs, he does not feel loved and cared for on a daily basis. After Mary starts to pay attention to Colin and play with him, he becomes stronger. They become close and develop a great friendship. As their friendship grows, so does Colin's strength and happiness.
Here are possible changes that could take place if the concentration of oxygen in theatmosphere were halved:1.Iron and steel would rust more slowly, prolonging the useful life of many objects madefrom these materials.2.Fires would burn less vigorously and produce more CO and soot. Logs in your fireplacemight last longer.3.Your body can adapt (just as it does at higher elevations) to lower levels of oxygen. But inthis case, the level may be too low for metabolic processes involving oxygen to occur at fastenough rates for life as we currently know it.33.Explain why CO is called the “silent killer.” Select two other pollutants for which this namewould not apply and explain why not.Answer:CO is termed the “silent killer” because your senses cannot detect this colorless, tasteless,and odorless gas. The same term cannot be applied to pollutants such as O3or SO2becauseeach has a distinctive odor that can be detected at concentrations below the level of toxicity.34.Cigarette smoke is 2–3% carbon monoxide.a.How many parts per million is this?b.How does this value compare with the National Ambient Air Quality Standards for CO inboth a 1-hour and an 8-hour period?c.Propose a reason why smokers do not succumb to carbon monoxide poisoning.Answer:a. To convert from percent to ppm, move the decimal point 4 places to the right.Alternatively:3%=3pph3pph×1,000,000ppm100pph=30,000ppmb.The NAAQS for CO in an 8-hour period is 9 ppm. The concentration of CO in cigarettesmoke is over three thousand times the 8-hour standard. The NAAS for CO
