What two 'supernatural' events does Casca describe to Cicero in Act I Sc.3 ?

In Act I Sc.3 Casca and Cicero meet on a Roman street in the evening. The weather is terrible and a storm is raging and both the heaven and the earth seem to have been shaken by the Gods above leading Casca to remark:

"Either there is a civil strife in heaven,
Or else the world, too saucy with the gods,
Incenses them to send destruction."

Cicero immediately asks him what other terrible sights he has seen and Casca lists out for him all the weird things seen by him. Two of the most striking 'supernatural' events described by Casca are (1) the slave who was completely insensible to his hand blazing away like twenty torches burning together and not being scorched at all and (2) the nocturnal owl hooting and shrieking in the market place at noon.

1. "A common slave--you know him well by sight--

Held up his left hand, which did flame and burn
Like twenty torches join'd, and yet his hand,
Not sensible of fire, remain'd unscorch'd."

2. "And yesterday the bird of night did sit

Even at noon-day upon the market-place,
Hooting and shrieking."

In The Crucible, why would anyone resent the Nurses?

To get an answer to this question, look at the narration that Miller places in Act I, Scene 2 after Rebecca Nurse enters the room.  This will give you Miller's assumptions about why people resent the family.

The first major reason people might dislike the Nurses is because they have a lot of land.  There have been disputes over some of the land.  In addition, Francis Nurse used to be poor and is now pretty rich.  There may be resentment over that.

The other major thing going on is political.  The Nurses and the Putnam family were on opposite sides of a dispute over who should be the new minister in Salem.

What are some of the gender and political issues in Irving's "Rip Van Winkle"?

Washing Irving was a Romantic, yet he was also a satirist.  In his legendary story, "Rip van Winkle," there are several people who are the target of Irving's satire.  One of these is the wife of Rip van Winkle as well as Winkle himself.  Certainly, Irving has his fun with the shrewish wife of van Winkle.  For, rather than overtly castigate Rip, Irving, as narrator, comments satirically that henpecked men

 are most apt to be obsequious and conciliatory abroad, who are under the discipline of shrews at home. Their tempers doubtless are rendered pliant and malleable in the fiery furnace of domestic tribulation, and a curtain lecture is worth all the sermons in the world for teaching the virtues of patience and long-suffering.  A termagant wife may therefore in some respects be considered a tolerable blessing--and if so, Rip Van Winkle was thrice blessed. 

Clearly, Irving has fun with the relationship of van Winkle with his wife, making her the brunt of criticism by the "evening gossips."  Likewise, Irving satirizes the newly post-revolutionary society, which he suggests may be too argumentative, rationalistic, and dogmatic.  As a Romantic, Irving expresses through the character of Rip a nostalgia for the stability, calm, and natural beauty of the colonial village:

the very character of people seemed changed.  There was a busy, bustling diputatious tone about it, instead of the accustomed phlegm and drowsy tranquillity.  He lloked in vain for the sage Nicholaus Vedder...uttering clouds of tobacco smoke instead of idle speeches.

While "Rip van Winkle" by Washing Irving suggests a certain nostalgia for the colonial past, some critics see a symbolic level to the story's meaning.  Rip's domination by his wife parallels the country's colonial past; his awakening to a new life suggests the new condition of the United States.  The happy ending hints at Irving's optimisim about the future of America.

Please explain what is the reason for yawning same time for two person? i think it is related to oxygen deficiency in environment

Yawning is a form of alerting the body to keep it to stand, and not a forerunner sign of sleep, according to a study undertaken by a team of U.S. scientists. When a person is yawning, the inhaled air reduces the temperature of blood vessels in the nasal cavity, allowing the cold blood to reach the brain. When the brain is cooled, the body enters a state of alert and can operate at full capacity, according to the study conducted by researchers at State University of New York.People who breathe through the nose more are yawning less, because blood vessels in the nasal cavity are already cold.

The researchers also found that the phenomenon of "yawning group", called "contagious yawning "is an evolved protective mechanism that makes one group of people to become more alert.

Experts say that, to avoid embarrassing moments of yawning in public something cold must  be applied on the forehead.

Researchers have examined for this study 44 persons.
Subjects watched for many hours  recordings with persons which are yawning. Specialists have recorded the number of "contagious yawning ". Also, while watching those recordings, the volunteers were asked to  breathe oral, nasal and normal. 50% of normal breathing or nose breathing, were yawning while they looked at the records. None of those who breathe through the nose was  affected by the yawning. Also, people who have put a cold handkerchief on their forehead  did not yawning, unlike the volunteers who have put a warm handkerchief on their forehead.

My question is: 4x+6=-10 I thought that when you transfer all you x"s to one side, you change sighns, and then if there was 2 negatives on the...

4x + 6= -10

In order to solve you need to isolate x,

4x + 6 = -10 

4x + 6 - 6 = -10 - 6         (subtract 6 from both sides)

[(-10-6) two same signs result in addition and the sign of the bigger number is taken, two different signs result in subtraction and the sign of the bigger number is taken]

4x = -16

4x/4 = -16/4                   (divide both sides by 4)

[In multiplication or division when you change sides the sign remains the same as shown above]

x = -4 Answer.

When multiplying or dividing signs are also multiplied such that, + * - = -

                                                                                            + * + = +

                                                                                             - * - = +

                                                                                             - * + = -

i.e. different signs when multiplied become negative, same signs when multiplied become positive.  

What atmosphere has been been created and what feelings are aroused in the reader of "Great Expecations"?The response will help me start my...

As is typical of many of the novels of Charles Dickens, there is a sympathy that is aroused in the readers upon learning that little Pip is an orphan and brutalized by his sister and verbally ambused by the "impostor," Uncle Pumblechook.  The opening scene in which Pip stands in the grey marsh, looking at the granite tombstones of his dead mother and father, whom he never knew, is very poignant.  Added to this, the appearance of the "man in grey," [notice the repeated use of the word grey] the convict, offers not only a melancholic scene, but one that threatens the poor child.

When Pip returns home, he is threatened by his cruel sister, who "raises him by hand."  Only the tender Joe, whom Pip has

a new sensation of feeling conscious that I was looking up to Joe in my heart.

is a refuge from the harshness of life for Pip.  Later, when Pip is assigned to visit Satis House and Estella ridicules him as a "common Laboring boy," the sympathies of the reader are further aroused.  So, throughout the narrative, the reader hopes that Pip will attain the love of the aloof Estella and that he will become, as he desires, a gentleman.  But, the reader wishes for Pip to be a gentleman in the true sense of the word, not with the false value with which Pip perceives being a gentleman. 

Disappointed in Pip in the Second Stage as he rejects true values for the false ones, the reader is relieved in the Third Stage when Pip realizes his folly in rejecting Joe and in being repulsed by Provis.  For, Pip returns to the loving person that he was as a child; he returns to Joe and Biddy, expressing gratitude for their love. Even the cruel Miss Havisham is redeemed as she begs forgiveness of Pip; with this confession, the reader cannot help being touched. Indeed, "Great Expectations" is a heartwarming and poignant narrative.

Explain how carotene works as a defense weapon for a plant?

Originally, vitamin A is an invention of the plant. Over the long history of their development, they have always been attacked by aggressive substances such as free radicals, parasites, bacteria, viruses, etc. Against these aggressions, plants have developed defense mechanisms, improved from one generation to another. So,people are not the perfect "producers" of the immune system, but plants are.

Million years, plants extract from their environment  carbon of atoms to produce, with their help, carotene, a pigment that stains plants so beautiful . Moreover, beautiful shades of red or pink of salmon and lobster or red plumage of the bird flamingo are nothing but a strong accumulation of molecules of carotene. But nature is not vain, she is not interested in being beautiful, carotene accomplishes far more important functions: protect plant cells from hostile microorganisms.

When dawn is coming, free radicals smell their chance: these aggressive-destructive substances, can be characterized as "sent" by the sun. When herbs, ferns, flowers and trees tumble their oxygen, in every cell in part is produced a chaos in which free radicals are trying to take advantage,burning unprotected cells by oxidation.

But carotene prevents them to do. Without carotene,in the morning, at 9, gorgeous flora of Central Europe should be burned, turned into a wilted material. Inventing carotene, nature has created a perfect weapon for protection against free radicals. And because there were appeared new and new types of free radicals, plants armored their cells  - gradually -  with over 500 different types of carotene.