Natural Sciences Essay Examples and Topics. Page 4

2,253 samples

Alice Ball’s Contribution to Science

Therefore, Alice Ball was a chemist whose scientific life and contributions to science led to the use of isolated ethyl ester from Chaulmoogra oil in the treatment of Hansen's disease.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 555

Research of Amorphous Solids in World

The purpose of this report is to describe the history, structure, properties, and applications in real life of amorphous solids. The molecules of an amorphous solid have a short-range order of action.
  • Subjects: Chemistry
  • Pages: 9
  • Words: 2570

The Age and Growth of Cod (Gadus Morhua)

The Atlantic Cod occurs throughout the colder and the deeper regions of the Northern Atlantic, starting from Greenland to North Carolina and Scandinavia.
  • Subjects: Biology
  • Pages: 12
  • Words: 3373

Responsible House Plant Keeping

As not every necessary chemical can be derived from sunlight and water, especially in the enclosed environment of a plant pot, it is recommended to include particular vegetation mixtures, ensuring the prosperity of the green [...]
  • Subjects: Biology
  • Pages: 8
  • Words: 2262

Kenya, East Africa: History and Geography

Kenya is an East-African country bordered on the northern sides by Ethiopia and South Sudan, Lake Victoria and Uganda to the west, Tanzania to the south, and the Indian Ocean and Somalia to the east.
  • Subjects: Countries Studies
  • Pages: 7
  • Words: 711

The Characteristics and Importance of Nervous System

The nervous system is rightfully considered to be one of the most complicated and significant systems of the human body, which is responsible for the quality communication and interaction between the organs.
  • Subjects: Biology
  • Pages: 6
  • Words: 1705

Portugal: Country Presentation

There are several challenges that should be noted. First, Portugal is challenged by the quality of justice in the country.
  • Subjects: Countries Studies
  • Pages: 6
  • Words: 744

Massive Leak of Liquified Chlorine Gas

Small quantities of chlorine can reach the threshold of acute poisoning within a very short time, thereby leading to casualties.
  • Subjects: Chemistry
  • Pages: 19
  • Words: 2169

Cooper and Silver: Physical and Chemical Properties

For the chemical and metallurgical industry, a thorough study of the properties of the materials used and the application of reference data for analysis and possible prediction of the results of a practical application is [...]
  • Subjects: Chemistry
  • Pages: 7
  • Words: 1976

Sugar Results: Experiment on Chocolate

When the concentration of glucose was high, the color and odor of the reaction mixture were darker and more intense, respectively, due to a larger amount of products formed.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 434

Mendelian Corn Genetics: An Experiment

Seeds are then sorted out on the basis of their color and shape and the obtained data recorded adjacent to the respective phenotypes. Determine the 2 value for each experiment, and use the table of [...]
  • Subjects: Agriculture
  • Pages: 3
  • Words: 484

Co-Evolution: Angiosperms and Pollinating Animals

The birds need nectar from the flowers, the plants that produce nectar consequently only do so to attract these birds and insects, for the process of drawing nectar from these plants to be possible, the [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 601

Bacteria Identification: Enterobacter Aerogenes

However, it is sensitive to most of the antibiotics specific to the bacterium although the sensitivity is easily lost due to its unique mechanism for resisting antibiotics particularly through the production of lactamase enzyme.
  • Subjects: Biology
  • Pages: 4
  • Words: 1096

Chromatography in the Determination of Amino Acids

The rate of migration relies on the strength of the chemical interactions between the analyte and the mobile phase as well as the interactions between the analyte and the stationary phase.
  • Subjects: Chemistry
  • Pages: 3
  • Words: 837

Lancelets’ Adaptation and Environment

The first describable organism in the evolutionary phylogeny of lancelets is the 'Branchiostoma Lanceolatum', a molluscan slug of the Limax species.
  • Subjects: Zoology
  • Pages: 2
  • Words: 572

Nucleophilic Substitution Reactions of Alcohols

The objective of the experiment is to demonstrate how substitution reactions of alcohol occur. Specifically, the experiment aims to demonstrate the formation of 1-bromobutane from 1-butanol through a nucleophilic substitution reaction.
  • Subjects: Chemistry
  • Pages: 8
  • Words: 2137

Substitution Reactions of Alcohols

1 The SN2 substitution reaction occurs when the attacking atom or group is a strong nucleophile that hits the electrophile from the rear end thereby ousting the leaving group.
  • Subjects: Chemistry
  • Pages: 10
  • Words: 2743

The Effect of Acid on Enzyme Activity

The addition of hydrochloric acid to the liver in beaker B lowered the pH for catalase. In beaker A, distilled water provided a neutral pH that was essential for the activity of catalase.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 621

Hydrogen – The Lonely One

My name is Hydrogen, and my name is usually denoted by the letter 'H.' I am the first born in a family of seven and our family name is Group 1. Due to my weight [...]
  • Subjects: Chemistry
  • Pages: 3
  • Words: 892

Process of Gene Expression

One of the major mechanism through which gene expression is altered is addition where a base pair is added to the normal sequence hence changing the specificity of the protein that the code specifies.
  • Subjects: Biology
  • Pages: 4
  • Words: 1123

OECD-GLP Guidelines: Toxicological Tests

During and after the duration of exposure, the observational studies, biochemical analyses, hematological tests, and histological studies that were conducted on the rats show that the biological responses in the rats did not differ significantly [...]
  • Subjects: Biology
  • Pages: 7
  • Words: 2275

Artemia sp.: Morphology and Lifecycle

The male possesses a pair of the posterior penis, while the female has a conspicuous brood pouch located behind the thoracopods.
  • Subjects: Zoology
  • Pages: 2
  • Words: 686

Evolution of Makkah as a City

The first pattern is a central business district, in this pattern the shape has been affected by the natural topography of the city of Makkah.
  • Subjects: Countries Studies
  • Pages: 5
  • Words: 1308

Human Evolution and Animal Extinction

The recent scholarly findings prove that invasions of Homo sapiens to the Austronesian and American continents were the major factors that conditioned the extinction of numerous animal species.
  • Subjects: Evolution of Humans
  • Pages: 3
  • Words: 825

The Main Objective of DNA Fingerprinting in Agriculture

Therefore, the main objective of DNA fingerprinting in agriculture is to overcome the limitation of insufficient dissimilarity among prior genotypes and come up with the best ideas to discover new molecular markers and collect data [...]
  • Subjects: Agriculture
  • Pages: 2
  • Words: 425

Ethnography and Data Mining in Anthropology

The study of cultures is of great importance under normal circumstances to enhance the understanding of the same. Data mining is the success secret of ethnography.
  • Subjects: Anthropology
  • Pages: 3
  • Words: 866

Geography and Its Impact on History of Societies

The climate of the continent was largely uniform, and this ensured that the populations were able to migrate and adapt their crops to different parts of the continent.
  • Subjects: Anthropology
  • Pages: 9
  • Words: 2697

Anthropology. Nature Versus Culture Debate

This stimulation can only be found in the environment and therefore the brain is able to take up so much from the environment that is the culture of the people.
  • 1
  • Subjects: Anthropology
  • Pages: 6
  • Words: 1662

Evolution of Humans: The Human Evolutionary Theory

The earliest best-known theory of evolution was propounded by Charles Darwin, whose main thesis was that life has evolved from simple single-celled organisms to multi-cellular, complex living things through the process of natural selection and [...]
  • Subjects: Genetics
  • Pages: 2
  • Words: 558

Impacts on Kenya Since Its Independence

These were the major issues that had to be addressed in the context of the newly acquired independence of Kenya, and it is reasonable to admit that the country needed strong innovators, leaders, and fighters [...]
  • Subjects: Countries Studies
  • Pages: 5
  • Words: 1615

Marfan Syndrome in Genetic Counseling

The two generation hierarchies above and one generation hierarchy below the Anne's generation was pooled and presented in the chart as below: Firstly, the typical clinical symptoms attributed to MFS were sorted from the description [...]
  • Subjects: Genetics
  • Pages: 4
  • Words: 1442

Postmodernism in Anthropology

Thus, the change of epochs in the human philosophy was also the shift in the scientific focus on society, i.e.the social sciences could not escape the influence of the shift and followed it, adjusting the [...]
  • Subjects: Anthropology
  • Pages: 20
  • Words: 3603

Museum “Sex of Animals” Exhibition

The museum has writings on the wall, and videos that show the animals in sexual acts. Same-sex sexual behavior in some of the animals led to a rethinking of same-sex sexual behavior in human beings.
  • Subjects: Zoology
  • Pages: 4
  • Words: 1086

Flocking: The Animal Behavior Model

Flocking comes from the word "flock" described as a group of birds conducting flocking behavior in flight or when foraging. One principal advantage of flocking is the safety gained in numbers and another is increased [...]
  • Subjects: Zoology
  • Pages: 6
  • Words: 1259

Element of the Periodic Table – Antimony

Antimony is mostly found with other elements and "Antimony was recognized in compounds by the ancients and was known as a metal at the beginning of the 17th century and possibly much earlier" Antimony is [...]
  • Subjects: Chemistry
  • Pages: 5
  • Words: 1356

Oxidation and Reduction Process

The amount of oxygen present in the atmosphere and the nature of the material it comes in contact with determine the process of oxidation.
  • Subjects: Chemistry
  • Pages: 8
  • Words: 1486

Herdt’s Contribution to the Anthropology of Gender and Sexuality

To understand his comprehensive contribution to the field of anthropology of gender and sexuality this paper analysis his research on "ritualized homosexuality" and "boy insemination" in terms of these theories implications on scientific understanding of [...]
  • Subjects: Anthropology
  • Pages: 3
  • Words: 804

Pfiesteria Piscicida: Classification and Analysis

Pfiesteria piscicida is a single-cell, a microscopic organism found in the environment for millions of years. 8S regions agree to the placement of Pfiesteria in the Peridiniales or a group between the Peridiniales and the [...]
  • Subjects: Biology
  • Pages: 7
  • Words: 1704

Re-Imagining New York: The Rise of Culture

It is very hard to trace the origin of the culture of a given society due to the complexity of people's in their originations and interactions between different persons of the world.
  • Subjects: Anthropology
  • Pages: 2
  • Words: 646

Sri Lanka’s Modernization and Restructuring

A professed abolishment of the caste system, heavy Buddhist influences, and a powerful president, who holds the roles of both head of government and commander-in-chief of the country's armed forces, are all Sri Lankan realities.
  • Subjects: Countries Studies
  • Pages: 4
  • Words: 1114

KHT Molar Solubility Experiment

Thus, the calculated molarity of NaOH is used to compute the molar solubility of KHT, which is the quantity of KHT moles that are liquefied in every liter before saturation level.
  • Subjects: Chemistry
  • Pages: 4
  • Words: 1322

Waxes and Greases Production and Specifications

In plants, the waxes are found on the cuticles, fruits, and leaves among other parts of the plants. In this light, bees and spermaceti produced the animal wax that was the main source of wax [...]
  • 5
  • Subjects: Chemistry
  • Pages: 14
  • Words: 3837

X-Ray Fluorescence Experiment with Salt

The salt sample was then put in a plunger to be compressed followed by measuring the height of the compacted sample, which was 7 cm. Other chemical elements that were found in the salt specimen [...]
  • Subjects: Chemistry
  • Pages: 3
  • Words: 878

The Pinacol Rearrangement Organic Reaction

The first objective of the experiment was to demonstrate how pinacol undergoes rearrangement to form pinacolone under the catalysis of heat, acid, and boiling chips.
  • Subjects: Chemistry
  • Pages: 5
  • Words: 1660

Breakdown of the Periodic Table

The Periodic Table is the tool for arranging elements based on the correlation between the periodic function of their atomic numbers and the properties of the elements in question.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 725

Reactive Dyes and Membrane Filtration

Many factors such as techniques of dyeing, the contents, the processes and possibilities of recycling influence the choice of size and type of the membrane to be used in a dyehouse [25].
  • Subjects: Chemistry
  • Pages: 3
  • Words: 977

Seed Germination Experiment: Results and Discussion

The results indicated that the number of germinated seeds differed according to the concentration of solutions. 0625M CaCl2 germinated quickly on the second day and attained the mean of about 10 germinated seeds on [...]
  • Subjects: Biology
  • Pages: 4
  • Words: 967

Manila City and Its Modern-Day Development

This curtailed the development of several areas in and around Fort Bonifacio and led to the main economic centre of the Philippines being located in Makati instead of within the main region of Manila.
  • Subjects: Countries Studies
  • Pages: 2
  • Words: 865

The Replacement Model: Main Aspects

Therefore, the replacement theory is based on the idea that the modern type of human beings could evolve only in Africa.
  • Subjects: Evolution of Humans
  • Pages: 2
  • Words: 702

Deep-Sea Currents and Upwelling Along Florida

The thermohaline circulation influences the movement and population of the marine ecosystem and heat redistribution both in the sea and on the earth's surface.
  • Subjects: Geography
  • Pages: 7
  • Words: 2266

Hip Dysplasia and Canine Parvovirus in Dogs

In the case of the inhabited hip dysplasia, the disease is related to genetic changes. In most cases, it is the combination of two causes that leads to hip dysplasia.
  • Subjects: Zoology
  • Pages: 6
  • Words: 1685

Weather Forecasting and Its Development Prospects

The given paper delves into the peculiarities of weather forecasting, its progress, and approaches that are used today to achieve the increased accuracy of data and mitigate the negative impact of natural disasters on people.
  • Subjects: Geography
  • Pages: 5
  • Words: 1368

“Deep Mapping and Neogeography” by Barney Warf

The author divides the paper into several logical chapters where the definitions of such issues as deep mapping and neogeography are given, the essence of neogeographic deep maps is explained, and the example of how [...]
  • Subjects: Geography
  • Pages: 2
  • Words: 563

The Evolution of Finches and Their Feeding Habits

The key results that led to the rejection of the hypothesis that the small beaks prefer picking small-sized seeds while large beaks prefer picking larger seeds indicated that small pliers and curved pliers prefer sunflower [...]
  • Subjects: Zoology
  • Pages: 5
  • Words: 1505

The New East End of London

Despite the differences in the classification of all regions that make the East End London, a general contention is that East End London is different from East London.
  • Subjects: Countries Studies
  • Pages: 10
  • Words: 2861

Killer Whale, Its Life Cycle and Behavior

The killer whale is the largest member of the dolphin family and a very fierce predator. In the Southern Hemisphere, the types of killer whales found there include type A, B, C, and D.
  • Subjects: Zoology
  • Pages: 5
  • Words: 1388

Sunflower Plant Growth With Minimal Water Requirements

During the growth of the plant, water is necessary for transpiration and evaporation. The objective of the study was to determine whether plant type affects growth rate when using minimum water requirements.
  • Subjects: Biology
  • Pages: 7
  • Words: 2015

Elephant Communication and Its Types

Of great interest in the paper will be elephants' seismic communication. In essence, elephants have the capability of generating both strong and weak sounds.
  • Subjects: Zoology
  • Pages: 16
  • Words: 4550

Cargo Cults, Acculturation, Fat Acceptance Culture

In essence, the cargo cult gives them hope of the coming period of prosperity and comfort. Participants in the video believe that American society is ethnocentric on the issue of obesity.
  • Subjects: Anthropology
  • Pages: 3
  • Words: 905

Urban Agricultural Impact on Human Life

One major characteristic of urban agriculture that differentiates it from rural agriculture is the integration of agriculture in the urban economic and ecological system.
  • Subjects: Agriculture
  • Pages: 8
  • Words: 2236

Human Genome Project vs. Human Proteome Project

Abhilash highlights that proteome is a combination of protein and genome; proteome comes from the word proteins and refers to all proteins that are produced by an organism in a given set of environmental conditions [...]
  • Subjects: Genetics
  • Pages: 5
  • Words: 1385

Biosphere Evolution and Threats

The biosphere, however, overlaps between all the spheres that include the lithosphere, which is found on the surface of the earth.
  • Subjects: Geography
  • Pages: 3
  • Words: 867

Agricultural Pesticide Negative Impacts

The presence of pesticide residues in water, air, and the food is considered the main consequence of the neglectful use of pesticides in agriculture as it puts a serious risk to the safety of people [...]
  • Subjects: Agriculture
  • Pages: 5
  • Words: 1457

Gene-Environment Interaction Theory

The doctrine was, originally, generated by the scientists, Sandra Scarr, who suggested that genes may impact the constitution of the surrounding environment, which stimulates a certain niche of human responses and to the surrounding conditions.
  • Subjects: Genetics
  • Pages: 2
  • Words: 429

“Dancing Skeletons: Life and Death in West Africa”

The conflict is expressed in how the author describes her culture shock when introduced to the native women's way of treating children or the procedure of female genital mutilation, for that matter.
  • Subjects: Anthropology
  • Pages: 4
  • Words: 1129

Urban Agriculture and Localization

The increased rate of rural to urban movement has caused urban food shortage, a high cost of food, and a huge reliance on imported food, among other challenges.
  • Subjects: Agriculture
  • Pages: 10
  • Words: 2839

Farmer Definition and Culture

The era of information the has led, to the creation of the particular image of success, and mass media created an image of a successful and stylish businessman.
  • Subjects: Agriculture
  • Pages: 6
  • Words: 1673

“Using Anthropology” by David W. McCurdy

In the instances that this reading describes, there is a difference between the way that people describe their own situation, and the way it appears to an outside observer.
  • Subjects: Anthropology
  • Pages: 2
  • Words: 644

Anthropology Issues: Extinct Hominid Java Man

Java man's fossil was discovered in Java, an island in Indonesia. Java man's fossil discovery occurred along river Solo's bank in the Eastern part of Java.
  • Subjects: Anthropology
  • Pages: 4
  • Words: 1118

Switzerland Geography Profile

The three distinct mountains in the region are the Jura Mountains in the northwest, central plateau, and the Alps in the south.
  • Subjects: Geography
  • Pages: 2
  • Words: 659

Archeology: The Bull-Headed Harp and Sound Box

In total, four scenes are depicted in the sound box, and scholars think that they are depicting a party in the spirit world, or the land of the dead. Also, the depictions of the men [...]
  • Subjects: Archeology
  • Pages: 2
  • Words: 568

Patrilineal and Matrilineal Descent Groups

For example, in a patrilineal descent, the descent group is composed of both the females and males sired by a father belonging to the patriarchal affiliation.
  • 3
  • Subjects: Anthropology
  • Pages: 5
  • Words: 1713

Lubricants Oil Production in Refineries

Despite being various categories of the lube oil as mentioned earlier in the project, mineral lube oil from petroleum is the commonly preferred lubricating oil to the synthetic lube oil.Fig.showing lubricating oil The history of [...]
  • Subjects: Chemistry
  • Pages: 8
  • Words: 2245

Marxism in Development Geography

Marxist Geography is critical in nature, and it utilizes philosophy and theories of Marxism to look at the spatial relations of human Geography.
  • Subjects: Geography
  • Pages: 6
  • Words: 1695

Medical Anthropology

An analysis of the power relations affecting biomedicine addresses questions such as who has the power over agencies of biomedicine, how and in what forms power is to be delegated, how the power is to [...]
  • 1
  • Subjects: Anthropology
  • Pages: 12
  • Words: 3322

History Of Biotechnology

In the course of the First World War, the processes of fermentation were set up in order to carry out production of acetone from the solvents of paints as well as starch to be used [...]
  • Subjects: Biology
  • Pages: 7
  • Words: 1908

Ethnography: An in-depth analysis

The focus of this process is the collection and recording of detailed information about the activities of a selected group of people or community with regard to the topic of the study, which proves useful [...]
  • Subjects: Anthropology
  • Pages: 10
  • Words: 2709

Exotic Species Threat to Native Species

The main reason exotic species normally pose a greater threat to native species in the island is because island species might have evolved in the absence of strong predators and competitors.
  • Subjects: Biology
  • Pages: 2
  • Words: 590

1996 Mount Everest Disaster: Leadership Perspective

Everest and its summit became known to the western world in the beginning of the twentieth century. Thus, Hall and Fischer overestimated their abilities and this led to the tragedy.
  • Subjects: Geography
  • Pages: 4
  • Words: 1134

Cities in Post-modern Era

The characteristic of the post-modern cities have put emphasis on the commercialization and business orientation and in this case resulting in de-materializing the economy and the lives of the people while emphasizing on the economic [...]
  • Subjects: Geography
  • Pages: 7
  • Words: 1926

Benefits of uterine family

Wolf in her book tries to explain the benefits of having uterine families in Chinese kinship system stating that both the uterine family of a woman's maternal parent and her individual uterine relations is created [...]
  • Subjects: Anthropology
  • Pages: 4
  • Words: 1297

Human development index

It is important to note that the origin and development of the human development index is closely linked to the United Nations, to be more precise, to the United Nations Development Program's annual development reports.
  • Subjects: Anthropology
  • Pages: 3
  • Words: 795

Ecology of Panther a Leo (Lion)

In India, the habitat of lions is in both the forests of dry savanna and the dry forests of deciduous scrub.
  • Subjects: Zoology
  • Pages: 7
  • Words: 1940

GIS Data Organization: Spatial Data Structure & Models

Apart from the difference between data and information, there is a huge gap between geographic data and data in general. Therefore, Fazal's Spatial data structure and models is a crucial piece of information that helps [...]
  • Subjects: Geography
  • Pages: 8
  • Words: 2181

Survival Mechanisms Of Wild Animals

Trinkel and Kastberger argue that, the foremost threat that is facing lions in the jungle is the intrusion of more carnivores because they can overwhelm lions and force them to migrate to other destinations.
  • Subjects: Zoology
  • Pages: 10
  • Words: 2925

The Process of Fertilization in Mammals

In mammals, fertilization mostly takes place inside the body of the female animal whereby the gamete from the male animal known as the sperm fuses with the female gamete in the oviduct forming a zygote. [...]
  • Subjects: Zoology
  • Pages: 4
  • Words: 1148

Unique Behaviors of Domestic Cats in Their Natural

Thus, evolutionary behaviors of territory marking can effectively happen in natural setting where cats have freedom to explore their environment and interact with other cats during mating.
  • Subjects: Zoology
  • Pages: 5
  • Words: 1519

Country Review: Switzerland

The effects of globalization and the need for the country to take a more active role has seen the country explore the possibility of relaxing it s strict laws that govern its international relations.
  • Subjects: Countries Studies
  • Pages: 5
  • Words: 1522

Stem Cell Research

D, in the article I am Pro-Life and Oppose Embryonic Stem Cell Research, opposes stem cell research in particular embryonic stem cell research.
  • 5
  • Subjects: Genetics
  • Pages: 5
  • Words: 1780

Census Tract 78.09: Oahu Island

In addition, most of the population that amounts to about 75 % of the total count is known to dwell on the 'urban' side of the island.
  • Subjects: Geography
  • Pages: 8
  • Words: 2163