Carolina Posada Osorio (BEd)

(Licenciada en Educación. Licenciada en Comunicación e Informática educativa) -COLABORADORA. Redactora y divulgadora.

biology

photosynthesis in plants

Do you believe us if we say that plants are not the only organisms that carry out photosynthesis? It sounds incredible, but it is...

Statistics

Z Score Calculation Examples

In simple terms, the Z score , also known as the standard score, gives an idea of the distance between the mean and a...

issues

How to remove super glue from anything

Knowing how to remove super glue (also called super glue , instant glue, or crazy glue) is essential when working with strong adhesives. If...

Philosophy

What is Socratic ignorance?

We think of the world, and our place in it, in terms of what we know and what we think we know. Our libraries...

Geography

Distance between degrees of latitude and longitude

In the real world, latitude and longitude play an important role in many fields and calculations, but one of its most common uses is...

Chemistry

What is an anhydrous compound?

For starters, the term "anhydrous" means "without water." Therefore, anhydrous compounds are compounds that do not contain any water elements. Anhydrous compounds exist in...

History and culture

The evolution of the modern oven: history

Were there kitchens before stoves? Although or we will go until then in history, surely there were. Cooking is an almost ancestral art and,...

English

English conversations for beginners

According to Ethnologue , a source that provides information on the world's languages, English is the most widely spoken language in the world. At...

Chemistry

What is the densest element on the periodic table?

The word "osmium" is unlikely to be the first word that comes to mind when you wake up after a good night's sleep. And...

geology

The primary and secondary standards in chemistry

Chemical reactions are taking place all over the world at this very moment: in chemical and pharmaceutical laboratories, in countless industrial facilities, and in...

Physical

Chemical composition of bubbles in boiling water

Let's talk about bubbles, do you know what exactly those bubbles are that you see in a pot full of boiling water? Some people...

Chemistry

What is an atom? Explanation and examples

Even if we were to use the most capable and powerful microscopes to see tiny particles, atoms are so small that using these microscopes...

Chemistry

Differences Between Atomic Weight and Atomic Mass

Atomic mass and atomic weight, being similar chemical terms, are often confused by students. Through this article we are going to provide some tools...

Chemistry

Chemical Storage Color Codes

Isolating, separating and purifying substances are primary tasks in the world of chemical practices. The separation and storage of chemical products is usually done...

Statistics

Null hypothesis: definition and examples

The null hypothesis indicates that there is no relationship between two population parameters, that is, between an independent variable and a dependent variable. If...

Uncategorized

The Ward Weaver Case: The Ashley Pond and Miranda Gaddis Murders

On August 13, 2011, United States police officers received a call accusing an Oregon City resident of the murder of Ashley Pond and Miranda...

History and culture

Who murdered Riley Ann Sawyers, “Baby Grace”?

The story of Baby Grace made Kimberly Dawn Trenor infamous: she was accused of killing her 2-year-old daughter, Riley Ann Sawyers, in 2007. Trenor...

History and culture

What was the Roman “comitia curiata”?

The committees were the popular assemblies of ancient Rome, summoned and presided over by a magistrate. In the comitia , the Roman people appeared...

Statistics

The maximum and minimum of a data set

The "maximum" and "minimum" can be used either to calculate the range of a data set in descriptive statistics, or to calculate the extreme...

English

Performative verbs and the theory of speech and act

Although you probably haven't read about them in grammar books, you may have heard of a category of verbs called performative verbs . It...

English

What are prepositional phrases in English grammar?

A prepositional phrase is a group of words made up of a preposition, the object of the preposition, and words that modify that object....

Animals and Nature

How does a mollusk use its radula?

You won't find a radula on the human body, but it is a common anatomical feature of animal species in the phylum mollusca ....

Statistics

Mean Absolute Deviation and Standard Deviation

In a large data set, to find out to what extent there are variations in relation to a mean score, it is best to...

Literature

What are personal essays?

The personal essay is one of the most popular forms of creative nonfiction. Phillip Lopate says that the essay, for more than four hundred...

Spanish

Progressive Verbs in Spanish

In the grammar of Spanish there are more than 20 tenses, among which are not counted the progressive tenses , which do exist in...

Chemistry

What is the strongest superacid that exists?

Acids are both dangerous and very useful. They help us to dissolve food, to make products, to clean; they serve practically everything. However, there...

Uncategorized

What are the colors and meanings of the mood ring?

In 1975, Americans Maris Ambats and Josh Reynold invented what is known as the mood ring, also called a mood ring . Basically, this...

History and culture

Who was Semele in Greek mythology?

Although in Greek mythology there were many mortal women who were mothers of demigods, only the princess of Thebes, Semele, gave birth to an...

biology

Does the avocado seed have toxins?

The fruit of the Persea americana , the scientific name of the plant from Central America commonly known as avocado, has an edible fruit...

History and culture

Human sacrifices in the Mayan culture

The Mayan civilization flourished in the jungles and tropical forests of southern Mexico and Central America around 2000 BC and definitively declined around 1520...

Chemistry

What is a divalent cation?

Many elements that we know of do not exist in their native form, since they are so reactive that they are only found in...

Psychology

Simple examples of intrapersonal intelligence

For a long time, research on the human brain and learning has raised a number of questions, and many of them remain without a...

Animals and Nature

What we know about Chernobyl animal mutations

Three decades after the Chernobyl catastrophe, the world's worst nuclear accident, signs of life appear again in the exclusion zone. Chernobyl's wild animals thrive...

French

What does the French word “Coucou” mean?

If you are looking for a word that gives you a feeling of warmth, that is Coucou . Today we bring you some French...

History and culture

Biography of Elizabeth of York, Queen of England

Elizabeth of York was the wife of Henry VII and the first queen consort of England of the Tudor dynasty. The daughter of King...

Literature

narrative essay

When you write a narrative essay, you tell a story to the reader. The story can be real or fictional, but it is defined...

Literature

What is figurative language?

Figurative language is a form of expression that goes beyond the literal meaning of words to convey a message or idea. This concept dates...

History and culture

Meaning and origin of the surname Garcia

The oldest Latin form recorded in the spelling of the Garcia surname is Garsea, Garci and Garza, but the roots of this name could...

biology

What is bilateral symmetry

In biology, symmetry is a feature of certain organisms in which there is a regularity of parts in a plane or around an axis...

Chemistry

The pH of lemon juice

The pH measures the degree of acidity or alkalinity of a substance dissolved in water. The ranges of this measure go from 0 to...

Chemistry

the galvanic cell

The galvanic cell owes its name to its inventor, the Italian physicist Luigi Galvani. In 1780, Galvani showed that when two dissimilar metals are...

Sociology

sociological imagination

Charles Wright Mills defined the sociological imagination as "awareness of the relationship between personal experience and the larger society." From this definition, the sociological...

Literature

the descriptive essay

A descriptive essay offers a vivid exposition of a particular topic. Good descriptive writing can take the form of newspaper articles, book reports, research...

Chemistry

IUPAC in chemistry

IUPAC is the acronym (in its name in English) of the International Union of Pure and Applied Chemistry ( The International Union of Pure...

plants and nature

Ways to remove a tree

Trees provide oxygen, transform inorganic matter into organic matter, store carbon, stabilize the soil and prevent erosion, give life to the world's fauna, provide...

Chemistry

energy levels of electrons

The principal energy level, also known as the principal quantum number , is the region or shell outside the nucleus of the atom in...

Mandarín

How to sing “Happy Birthday” in Chinese

The idea of celebrating birthdays began with the Egyptians after realizing the symptoms that aging caused. With this, they began to celebrate life by...

History and culture

Biography of Sam Houston, founder of Texas

Sam Houston is one of the most important political figures in Texas. He was born in Rockbridge County, Virginia, on March 2, 1793, the...

History and culture

Anton van Leeuwenhoek, father of microbiology

Antonie Van Leeuwenhoek was a Dutch textile merchant (haberdasher) and self-taught scientist who, almost singlehandedly, laid the foundations for the development of bacteriology, protozoology...

social Sciences

Social evolutionism: development and theories

Evolution is a universal concept used to understand the origins and changes of different aspects of life over time. Aspects ranging from the origin...

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