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# Review

#### The Pythagorean Theorem

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Triangles are an important shape that come up all over the place in life, which is why trigonometry is one of the most important fields of mathematics. Pythagorean theorem is incredibly important for many different real life applications, such as architecture, construction, navigation, and surveying. Pythagorean Theorem allows us to calculate the side lengths of…

#### Forces in Physics

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There are several different types of forces that exist. One way of categorizing different forces is into contact and non-contact forces. A contact force requires something to be physically touching an object to exert force on it. A non-contact force does not require physical contact to act. An example of a contact force would be…

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There are several different parts of speech, which are categories of types of words. We are going to talk about four of the main eight parts of speech, which are nouns, verbs, adjectives, and adverbs. Understanding the parts of speech will teach you to use words properly in a sentence and become a better writer.…

#### Population Genetics: The Hardy-Weinberg Equilibrium

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The Hardy-Weinberg equilibrium is a model that proposes allele (variations of a gene) and genotype (genetic makeup) frequencies within a population remain constant when the population is in equilibrium. If in equilibrium, were are able to calculate the allele and genotype frequencies for these populations. For a population to be defined as being in “Hardy-Weinberg…

#### Le Passé Composé: IR, ER, RE

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There are three main parts to the past tense in French. The following formula represents these three parts: Le sujet + L’auxiliaire + Le participe passé Le Sujet When you compose a sentence, a subject is usually included. The subject is the person(s) and/or thing that is performing the action/verb. In French, these are the common…

#### Mitosis: From a Mother to Twins

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Mitosis is a form of cell division that allows a mother cell to give rise to two daughter cells. The daughter cells are genetically identical to each other and to the mother cell. Mitosis involves nuclear division, where the duplicated DNA in the mother cell splits into two identical sets of chromosomes (one set for…

#### Solving a System of Equations: Substitution and Elimination

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When dealing with a system of linear equations there are two methods to algebraically solve the question. One is substitution and the other is elimination which is meant to be a shortcut. Both methods will bring you to the same solution but with more practice, you will recognize patterns and see which method would work…

#### Balancing Chemical Equations

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Often in chemistry chemical reactions are written in an equation form using chemical symbols. The reactants of the chemical reactants are placed on the left hand side of the reaction and the products of the reaction are placed on the right hand side of the equation. The 2 sides of the equation is then connected…

#### A Basic Overview of the 4 Types of Human Tissue

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In order for us to complete are daily actions, we need our body to function as a whole. The body does this by having organs work together for different purposes. Our organs are made up of many tissues (sheets of cells) connected together to serve different purposes, to execute actions inside our body and help…

#### Climate Change

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Climate Change (or global warming) is the increase of the Earth’s global temperature. In the last century, it has been noted that the Earth temperature has increased by 1 degree Celsius. This number may not be very large; however, it has huge impacts on the wildlife and humans all around the world. What is causing…