Free Essay Examples on Sciences

To state the fact that chemical disposals located near the community can cause severe illnesses, it is necessary to complete the careful research, to analyze the findings, and focus on conclusions. Thus, it is important to clarify the type of research needed in order to find the necessary materials on the issue. Unsafe chemical disposal practices are threatening not only…

Introduction The economy of Honduras visibly depends on the agricultural sector. Its influence can be traced in the country’s GDP and is properly reflected in the involvement of the population, with roughly half of the workforce involved in agricultural activities. Unfortunately, the most value-added segment of the country’s productivity is also one of the most riddled with challenges. Some of…

Introduction Ever since the discovery of DNA and the ability to manipulate it, genetics research has remained one of the most controversial scientific topics of the 21st century. The key concepts around this topic consist of genetics (the study of genetic material and mechanisms responsible for the transmission of characteristics) and eugenics (a complex of practices aimed at improving people’s…

The choice of the research approach depends on the goals set and the questions to be answered. The two approaches are based on two quite different philosophical paradigms. In terms of the qualitative philosophical view, it is believed that there are multiple realities, which creates various contexts that should be taken into account or even brought to the fore (Creswell,…

Introduction In the study of parasitology and disease ecology, and the ability of a host to tolerate or resist parasites has been given extra attention. First, it is important to differentiate between resistance and tolerance to apply these terms in further research. Biologists recognize that both terms refer to the ability of an organism to defend itself from harmful effects…

Benedicta is planning for his retirement based on his current savings and salary. Table 1 indicates all assumptions that are taken into consideration for retirement planning. He has savings, which are considered as savings at the start of the plan. His salary is expected to increase by 2% every year till he reaches his retirement age of 65 years. It…

Introduction and Literature Review When temperature decreases, liquid changes into solid, which is called freezing. The temperature at which the solid-liquid change takes place depends on the chemical composition of the substance (Ge & Wang, 2009b). While pure compounds melt and freeze at certain temperatures, the addition of other substances may alter the freezing temperature; that is, the resulting mix…

Biological Basis The concept of personal genomics can be defined as the area of genomics which addresses the issues of gene sequencing, creating a personal eTQL genomic profile, and other aspects of obtaining essential information from one’s genome (Martinez-Jimenez et al., 2015). Particularly, the concept implies that the order of four crucial elements, i.e., “adenine, guanine, cytosine and thymine” (Gupta,…

The phenomenon of the F statistics is typically referred to as the value retrieved in the course of carrying out an ANOVA test (Hahs-Vaughn & Lomax, 2013). Similarly, the F-statistics-related data can be acquired when running a regression analysis. Seeing that the two tests mentioned above are aimed primarily at determining the differences between the samples of the population under…

Introduction The discriminant analysis and the logistic regression are similar in that both these types of analysis attempt to predict the membership of a case to one of the groups into which the sample is classified by a categorical dependent variable (Warner, 2013). Both of these analyses allow for creating a linear classification model, that is, a model that attempts…

Video Summary The video called “In the Womb” presents an amazing discovery of the development of a newborn since the moment of the conception to the birth. Using computer imagery techniques, it is possible to observe the fetus in the mother’s womb and understand its complex nature. The video reflects on the fact that a mother provides shelter for her…

The accuracy of the research’s results depends on the statistical test chosen to measure variables. To decide what specific test to choose for the study, it is necessary to analyze the variables’ character. Considerations made during the decision process can be organized according to a series of questions to direct the process of choosing tests. The statistical decision model is…

Introduction Nature refers to the surroundings and external conditions that influence the way living organisms grow and develop. For humankind, nature influences the way they live, work and interact with the living and the non-living. Human beings do not exist in isolation; they require support from the rest of the life forms. The environment consists of physical elements such as…

Theoretical Probability Theoretical probability is one of the most commonly applied types of probability in statistics, especially in real-life situations. Theoretical probability refers to the possibility of a desirable outcome occurring; hence, one has to define the desirable outcome (Bennett et al. 214). The probability of an event occurring is calculated by dividing the number of desirable outcomes by the…

Introduction Creating the environment, in which consistent quality improvement becomes a possibility, is imperative for the contemporary entrepreneurship. Therefore, a detailed analysis of the current production process, including the repeatability and the reproducibility levels needs to be carried out (Liu, 2014). In the context of the identified scenario, one will have to carry out a one-sample t-test to figure out…

As the irrigation costs soar and are expected to double by the 2040s, growing pumpkins will become a challenge, the American Pumpkin Growers Association (APGA) stated in the Friday, Sept. 23, 2016 release. Droughts in the main farming districts will substantially decrease the average pumpkin diameter and possibly cause yearly $13-billion losses industrywide. This year’s summer brought record-setting droughts dropping…

Introduction The research article analyzed in the discussed paper presents the results of the study conducted by Settles and Lindsay (2011). The article investigates the topic of moral panic in the United States because of Hurricane Katrina and its influence on crime rates and the general state of the region. The study uses a mixed-method approach, which is relatively new…

The article that I have chosen as a target is called “Adipose stem cells: Biology and clinical applications for tissue repair and regeneration” (Kokai, Marra, & Rubin, 2014). It tells about how biology can help people solve such significant problems as tissue regeneration and recovery from serious injuries. The authors describe the whole process of recovery in detail, talk about…

A research question that can be addressed by a two-way factorial ANOVA is as follows: Is there an interaction between a person’s gender and their level of education that results in differences in the levels of depression between different groups? A factorial ANOVA would be an appropriate analytical method for this research question because it allows for comparing the means…

Carrying out a quantitative analysis is a crucial step toward identifying essential relationships between the variables under analysis. It should be noted, though, that the process in question can be carried out in a variety of ways, probability distribution being one of the tools that can be used for data assessment. By definition, the phenomenon of the probability distribution can…

Mitosis Mitosis is the process of cell division; as a result of it, two identical cells emerge. The cells of all types, except for sex cells, multiply via mitosis. Mitosis occurs in several phases (Dawson, 2002; The University of Arizona Biology Project, 2004): Interphase is the phase of preparation; during it, a cell grows and produces proteins and organelles; chromosomes…

The purpose of this paper is the review of the major principles and rules of the Central Dogma of molecular biology. The Central Dogma was first introduced in 1958, and it is meant to explain the universal rules of genetic information realization. The Dogma describes the basic principles of genetic information transfer: transcription and translation. The paper aimed to draw…

Article Similarities and Differences The three articles reviewed give different approaches to optimal udder preparation practices before and after milking to obtain high-quality milk. The papers involve primary studies investigating teat disinfection practices that affect iodine levels in milk. In all three studies, the variable measured in milk iodine content following pre- and post-milking teat preparation and dietary iodine consumption.…

The author starts the article by highlighting the importance of voice in everyday communication, particularly the fact that it can be used to define the communicative distance between the listener and the talker. He states the aim of the article as being an attempt to address the difficulties arising out of the lack of regard for the spatial properties of…

Introduction During the year 1900, in one Greek isle of Antikythera, sponge divers stumbled upon statuettes on an ancient shipwreck (Cowen 10). Their mission unearthed the many artifacts from the ruin. The shipwreck has been dated by numerous autonomous investigations to the early eras of the 1st century BC. The two researchers had been hired by the Greek government to…

Introduction The current paper will use the chi-square test in order to check whether there was an association between the class that female passengers traveled in on Titanic, and their chances of being saved from that ship when it sank. After a brief data file description, the assumptions of the test are checked, the research question, hypotheses, and alpha-level are…

Abstract In this paper, we experimented to assess the nutritive value of ruminant feeds. To do so, we analyzed the chemical compositions of dry matter, crude protein, acid detergent fibre, neutral detergent fibre, ash, and ether extract. Our findings revealed that ryegrass had the highest concentrations of dry matter (95.46), neutral detergent fibre (68.25), and acid detergent fibre (37.62). Similarly,…

Nowadays, humanity seeks to understand and discover the majority of the processes that occur in our Universe. People create new technologies and cognition tools to investigate far places and objects, understand their nature and peculiarities of the evolution. We manage to reach space, and there are numerous programs aimed at its investigation. Moreover, NASA and other agencies look for an…

A table is a form of a visual data that summarizes findings for a group of quantities. All information that is presented in tables is spread in rows and columns. Usually, data from a top row is associated with values given in a vertical column, which is usually on the left. Tables are very useful in representing scientific or economic…

Nowadays people strive for improving the quality of life, focus on higher accomplishments, and try to find new ways to overcome such social problems as diseases and hunger. In this context, genetic engineering seems to be potential to improve the quality of life because of creating new and improved organisms. The term “genetic engineering” is usually used to describe the…

Abstract Glycolysis is a specific process that is known as the first stage of the anaerobic respiration process in plants, during which 6-carbon glucose splits into two molecules of pyruvate, which is 3-carbon, under the impact of enzymes to generate the required energy. This process can be described in two stages and several steps that are associated with each stage.…

The UV-Spectrophotometer This lab instrument is used in the analysis of compounds based on their absorbance in the UV (200-400 nm) and visible (400-800nm) spectra. Its history dates the back to early 1800s when the diffraction grating was invented, enabling researchers to separate a light beam into its wavelengths. The instrument is based on electronic transitions that occur when a…

Abstract The evaluation design is selected depending on the type of research question, set hypotheses, and on expected evaluative outcomes. Measurements used to gather data become determined by the chosen evaluation design. Referring to the research question, the procedures of the evaluation design, the possible access to data, and the available time, it is important to choose a pre-experimental research…

Overall, the discriminant analysis and the multiple regression are similar in that they both construct a weighted linear combination of scores on several independent variables (Warner 2013). This combination ought to be optimal, meaning that it should predict the scores on the outcome variable from the scores on the predictor variables in the most precise manner (Warner, 2013). On the…

THESIS: Although Arizona and Texas have differences such as nicknames, different touristic places to visit, economic fact sheets, they also have many things in common; the similarities between Arizona and Texas conclude in their weather which is hot and dry, in their location in the border with Mexico, common historical periods and events and cultural features. Differences between the geographical…

Introduction Delmarva is a peninsula that is situated at the East Coast of the United States. It covers vast areas of Delaware, Maryland, and Virginia. The farming area is about 24 kilometers long and 113 kilometers wide. It borders Chesapeake Bay on the western side. Delaware River, Delaware Bay, and the Atlantic Ocean lie on the eastern side of the…

Extensive research exists on the topic of genetic makeup and its influence on personality. For example, a study conducted in 2004 found that such character traits as agreeableness and conscientiousness showed a complex genetic architecture, whereas the common pathway model could be used for the explanation of neuroticism and extraversion (Lewis & Bates, 2014). However, neither the independent pathway model…

Numeracy is an individual ability that is applied to basic numerical concepts. The fundamental numeracy skills include adding, subtracting, multiplying and dividing (Steen 2001). Numeracy is a practice that involves numerical and graphical information (McIntosh 2004). Data collection commands keenness because inaccurate data collection may lead to invalid results (Purcell, Elias, Davies & Wilton 2005). The current research results show…

Methodology The data of the number of defective flash drives manufactured by a small manufacturing company was obtained by counting them weekly for 30 weeks and then recorded against each week as presented in the Excel file. The Analysis Toolpak of MS Excel in performing correlation and regression analyses. According to Black (2009), correlation and regression analyses require variables to…

Although the question above seems to be philosophical or rhetorical, I will try to explain and argue my opposite viewpoint from different perspectives. The process of learning particular information from reading or analyzing appropriate materials is a scientific method. According to this data, it would be proper to claim that the difference between scientific knowledge and knowledge that was acquired…

People use the scientific method to address the problems affecting them. The scientific method is effective because it reduces bias and prejudice. Individuals can use the scientific method to solve their every-day problems (Trefil, 2012). This discussion highlights two scenarios that describe the use of the scientific method. The Mysterious Rash Targeted Problem and Observations The skin of the targeted…

Introduction Peer-reviewed journal articles are considered to be the most credible resources in different scientific topics or subjects. The information provided in such sources is always based on appropriate researches. The following paper is intended to discuss and explain what peer-reviewed articles are and how they are created. Discussion The process of the creation of peer-reviewed articles includes the following…

People have traveled across seas and oceans for centuries. During ancient times, people mainly avoided open seas as they used various landmarks to navigate. However, sailors gained experience and developed various methods and tools to find their way. The development of technology contributed greatly to the development of sea navigation as people could depend less on the distance from the…

Introduction Assessment of a given culture can be carried out from various perspectives. Some of the recognized perspectives, which are used by anthropologists and other professionals, include the emic and the etic approaches. To gain an emic perspective of a culture, the individual is required to view the world through the eyes of members of that particular group. The people…

Introduction Human genes are widely discussed nowadays, as scientists are willing to understand how they are connected with people’s health conditions. Epigenetics is one of those studies that focus on alterations in gene expression. In particular, it discusses those heritable changes that do not influence human DNA. Denoting alterations in a chromosome, this study manages to reveal the way gene…

Scientific Method Analysis The principal characteristic of a scientific research method is that researchers allow the reality to speak for itself. According to Zikmund and Barbin, “A scientific research method is the way researchers go about using knowledge and evidence to reach objective conclusions about the real world” (Zikmund & Barbin, 2010 p.7). This paper will evaluate the scientific method…

Introduction Analyzing the rates of defective goods production in a company is an essential step towards improving the company’s quality standards. The firm in question has been delivering rather unsatisfactory results; however, the manager claimed that the staff does not produce more than seven defective items per week. The application of a two-sided t-test will reveal the current score of…

Culture influences the humanity in many ways. Nevertheless, it is not always possible to explain its origin. Specific cultural characteristics have been forming for centuries. A lot of people consider culture a privilege of homo sapiens, but they are wrong. It is curious to observe the behavior of primates in their natural environment, for they demonstrate certain cultural traits. There…

A researcher carrying out qualitative research has to pay specific attention to credibility and dependability. These two aspects form the validity of the research. It is necessary to note that different scholars have come up with various definitions (Winter, 2000). In simple terms, credibility refers to the accuracy of the data obtained, and dependability refers to the accuracy and replicability…

When conducting research, it is important to reach accurate conclusions and generalizations concerning the participant groups. For this purpose, statistical tests are used, which can be classified into parametric and non-parametric. While for the first type, the researcher is aware of the parameter to be applied to the sample, the second type implies that no specific parameter has been identified…