Notes, summaries, assignments, exams, and problems for Secondary education

Why Leaves Turn Color in the Fall

Understanding Autumn's Stealth

The author describes autumn as a season that passes quickly through the years, acting with a sense of stealth.

Cause and Effect of Falling Leaves

The text explains the process of leaves changing color and falling in autumn through a cause-and-effect chain:

1. Trees pull nutrients back into their trunks and roots.
2. Corky layers of cells form at the petioles and scar over.
3. Undernourished leaves stop producing pigment.
4. Photosynthesis stops.
5. Leaves die and fall off.

The Role of Scientific Diction

The author uses scientific terms like anthocyanin and carotenoids to explain the pigments responsible for the changing colors of leaves. Anthocyanin is a red-violet pigment influenced by temperature and...

Dancing with the Wolves: Conquest of the West

The closing of the American frontier is marked by two significant dates: the Wounded Knee Massacre in South Dakota (1890) and the Columbian Exposition in Chicago (1893). The latter showcased America's triumph and glory. Historian Frederick Jackson Turner delivered a speech at the Exposition, declaring the frontier officially closed.

The Gilded Age and the Rise of Industrialization

The closure of the frontier coincided with the onset of the Gilded Age, a period of rapid industrialization. People migrated from rural areas to burgeoning industrial cities. Small farms suffered due to the rise of agribusiness.

Muckrakers and Social Reform

Amidst widespread corruption, a movement of middle-class intellectuals,...

Introduction

Generally, the essay introduces three of Poe's theories regarding literature. The author recounts this idealized process by which he says he wrote his most famous poem, 'The Raven' to illustrate the theory, which is in deliberate contrast to the 'spontaneous creation' explanation put forth, for example, by Coleridge as an explanation for his poem Kubla Khan. Poe's explanation of the process of writing is so rigidly logical, however, that some have suggested the essay was meant as a satire or hoax.

Poe's Philosophy of Composition

The three central elements of Poe's philosophy of composition are:

• Length: Poe believed that all literary works should be short. 'There is', he writes, 'a distinct limit... to all works of literary art - the

Johnny Depp - Jack Sparrow, is back in his fifth movie. He was born on board a pirate ship during a typhoon. Johnny wanted Jack Sparrow to be very weird, in a funny way. Jack always looks drunk, but he is like a real hero and the world's coolest pirate. He has a lot of tattoos, for example, a sparrow on his right forearm. He has a perfect pirate accent and decided to imitate Keith Richards' (of the Rolling Stones) London accent. Johnny read a lot about pirates to prepare for the movie and discovered that they were rock stars of their time, so he decided to copy the look of his favorite rockstar, Keith Richards. In the pirate style, he is the one who chose to put all the little objects in Jack's dreadlocks. He also wanted to have gold teeth.

mediterranean route:

Spanish or Italian towns to Islamic and Byzantine ports, imported luxury, perfumes, silks, porcelain.

atlantic and baltic routes:

Portuguese, Cantabria, Germany, Russia: Spanish and English wood, French wine, English tin, leather.

guild:

Artisans of the same trade formed craft guilds, they have strict laws.

romanesque :

Fisrt appearance in France, Italy, became an international style in 11th and 12th century, churches, cathedrals, monasteries made of stone, human representation: figures were rigid, unrealistic, Romanesque sculptures were polychrome, they were painted in bright colors.

gothic:

Began in France and spread widely from the second half of the 12th century, developed when cities were expanded, civil buildings, cathedrals,...

Past Simple

Use: For a past finished action.

Past Continuous

Use: For an...

TERTIARY SECTOR

The Growth of the Service Sector

The service sector encompasses a wide range of activities, including education, tourism, and more. In developed countries, it contributes significantly to both employment and wealth generation. The number of people employed in this sector has also increased in less developed countries. Developments such as globalization, economic changes, and increased trade have led many to speak of a "tertiary revolution."

The High-End Tertiary or Quaternary Sector

This sector includes activities related to technology and science, often requiring specialized training and offering high salaries.

The Low-End Tertiary Sector

This sector encompasses jobs that require minimal training and typically offer lower wages....

HUMAN IMPACT

Acidic rain: It is a broad term that includes any form of precipitation with acidic components and results when dioxide (So2) and nitrogen oxides (NO) are emitted into the atmosphere and transported by wind and air currents. Acid rain is caused by the burning of fossil fuels to generate electricity, the chemical releases of vehicles and from manufacturing. There are two forms of acid rain: dry deposition which is crust in a sheltered area and wet depositions that are raindrops of sulphurous acid. Acid rain can be very harmful to the environment because it takes away minerals from the leaves and soil and without them plants cannot grow properly. Even if this rain doesn’t fall straight into lakes it can get there through rivers...

The discrimination refers to behaviors directed against another group. For example: Gender discrimination puts women at a disadvantage compared to men in various social situations. In the business market, women receive lower wages than men, for performing the same tasks and having the same qualifications, experience, and training. Women still do most of the housework and it is they who take care of the children and the elderly, so they have little time to look for new job opportunities. And even if they achieve leadership positions, they have to fight more than men to see their work being recognized and valued. Gender discrimination is only one of many forms of negative discrimination and constitutes a violation of human rights.

Verb Tenses

Past Simple

Structure: Subject + Verb (past form or -ed) or 3rd column; Negative: didn't + base form.

Uses: Completed actions in the past (with expressions like last, ago, yesterday, in 1992).

Past Continuous

Structure: was/were + verb-ing.

Uses: Actions in progress in the past; Past Continuous + when + Past Simple or Past Continuous + while + Past Continuous.

Past Perfect

Structure: had + past participle (verb-ed or 3rd column).

Uses: An action that happened before another action in the past (with expressions like after, before).

Future Simple (Will)

Structure: will + base form.

Uses: Weather, promises, future predictions, spontaneous decisions.

To Be Going To

Structure: is/am/are + going to + base form.

Uses: Future plans.

Present Simple

Uses: