Natural Sciences Essay Examples and Topics. Page 2

2,340 samples

Ubiquity of Bacteria: Laboratory Activity

You will examine some surfaces and note that while you cannot see individual bacteria because they are so tiny and clear, it is possible to see a colony, or group, of bacteria. Then, the bacteria [...]
  • Subjects: Biology
  • Pages: 6
  • Words: 1192

The Integumentary and the Skeleton System

It is in the position of balance that the body is able to function successfully and in a normal state. It is the role of these hormones to control the body's operations.
  • Subjects: Biology
  • Pages: 4
  • Words: 1100

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

What Enzymes Are and How Do They Work

Enzymes should be in a proper shape to function well and resemble the way a key in the lock functions and they way it is affected by the nature.
  • Subjects: Biology
  • Pages: 3
  • Words: 871

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

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

Neolithic Revolution and Climate Change

At the primary stage of the evolution of human civilization, the rise of agriculture in the later part of stone age, also known as the Neolithic Revolution, was ultimately necessary to keep pace with the [...]
  • Subjects: Agriculture
  • Pages: 9
  • Words: 2523

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

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

Demographics: East Side Ward of Newark, New Jersey

The city of Newark, New Jersey, is the largest city in the state, although it is not the state capital. Currently, as stated above, the majority of the city's population is black, with the following [...]
  • Subjects: Geography
  • Pages: 2
  • Words: 582

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

Organic Chemistry: Combinatorial Synthesis of Azo Dyes

In the first case, adding hydrochloric acid to the produced azo dye led to the change of the color from dark red to orange, and the reaction with sodium hydroxide resulted in the change from [...]
  • Subjects: Chemistry
  • Pages: 2
  • Words: 556

Culture and Agriculture: Nature and Significance Understanding

Seeing that agriculture shapes the society and defines the course of its further development, promoting the ideas of environmentalism and sustainability, it will be reasonable to assume that agriculture belongs to the domain of cultures.
  • Subjects: Agriculture
  • Pages: 6
  • Words: 1665

Various Subsections of Anthropology

The central theme of anthropology is to trace the development that has occurred to the human race from the past to the present in different geographical locations.
  • Subjects: Evolution of Humans
  • Pages: 8
  • Words: 2352

Evolution and Adaptation of New York City Rats

In the city, rats are considered a cultural symbol, and their number is up to five times the number of people. The common types of rats are roof rats and Norway or brown rats in [...]
  • Subjects: Zoology
  • Pages: 11
  • Words: 3050

Basic and Applied Biology: Key Differences

The applied biology objective is to use the knowledge from basic science to solve potential problems affecting quality health, and an example is the Human Genome Project.
  • Subjects: Biology
  • Pages: 1
  • Words: 347

Brazil vs. Argentina: Comparative Analysis

The territory of Argentina is mainly composed of flat plains and plateaus; there are small areas of foothills, highlands, and canyons adjacent to the Andean zone.
  • Subjects: Countries Studies
  • Pages: 2
  • Words: 652

Comparison Between Kenya and Rwanda

This resource discusses the economic outlook of Kenya: macroeconomic and financial developments, changes in economic growth, risks of investment, and projected growth.
  • Subjects: Countries Studies
  • Pages: 7
  • Words: 2117

Continuous Cell Lines and Primary Cell Cultures

One feature which is common for both types of cell models is the tissue of origin both of them stem from, which means that to some degree, they share the same genetic makeup.
  • Subjects: Biology
  • Pages: 1
  • Words: 344

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

Effect of pH on Protein Solubility

The volume of the mixture was made to 200 mL in a measuring cylinder. The concentration of the protein in the supernatant was determined using a biuret reagent.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 660

The Experiment on Substitution Reactions of Alcohols

The purpose of the experiment is to study substitution reactions of alcohols because they can react as nucleophiles or electrophiles, depending on prevailing conditions of the reaction. This experiment illustrates the reaction of 1-butanol with [...]
  • Subjects: Chemistry
  • Pages: 8
  • Words: 2059

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

Mixtures and Compounds in Chemistry

The type of bonds and the combination depends on the position of each element in the periodic table. The elements in a compound are always in a fixed ratio and the arrangement is defined.
  • Subjects: Chemistry
  • Pages: 4
  • Words: 1284

Plastic Impact on Humans and Planet

Plastic is any organic material that when heated and pressure applied, it can expand and after it has been cooled it retains that shape it had been subjected to.
  • Subjects: Chemistry
  • Pages: 4
  • Words: 1079

The Digestive System in the Human Body

The stomach is an organ of digestion located between the esophagus and the duodenum on the left upper part of the abdominal cavity. The large intestines of the human body are located between the ileocecal [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 613

How Europe Underdeveloped Africa

For example, the highly centralized polities of Bunyoro and Buganda, located to the north of Lake Victoria, were the result of migrations, beginning in about the sixteenth century, of Lwo-speaking peoples originating in the territories [...]
  • Subjects: Geography
  • Pages: 4
  • Words: 1159

Cocoa Production and Its Environmental Performance

There is a variety of significant issues related to the growth and production of cocoa. A risk for the environment and trees is also present due to the practice of cocoa farming.
  • Subjects: Agriculture
  • Pages: 4
  • Words: 1190

Forms of Animal Communication

As a result, human-animal tactile communication in most of the cases is limited to physical contacts between domestic animals and their owners.
  • Subjects: Zoology
  • Pages: 10
  • Words: 2791

Plant Cell Physiology and Its Processes

Cell physiology is the study of the functions of the cell structures. The function of controlling movement of substances in and out of the cell is known as the physiological process.
  • Subjects: Biology
  • Pages: 2
  • Words: 610

Map Making History and Development

Globalization has made the world interconnected at a level that was unprecedented in the past resulting in people thinking of the world and the various countries and societies within it in a way that is [...]
  • Subjects: Geography
  • Pages: 10
  • Words: 2744

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

Characteristics of the Order Primate

The following is a description of some of the similarities and differences that exist between humans and chimpanzees and the most significant traits that each possesses taking into consideration the above four traits used to [...]
  • Subjects: Evolution of Humans
  • Pages: 2
  • Words: 666

Comparing Istanbul and London

London plays a significant role as commercial capital of the UK, while Istanbul is regarded as a cultural capital of Turkey mainly for its importance in maintaining the coexistence of different traditions, and its rich [...]
  • 2.5
  • Subjects: Countries Studies
  • Pages: 7
  • Words: 1987

Environmental Studies – Sustainable Development

"Sustainability is refers to the indefinite use of available natural resources without ever causing depletion of the energy or material sources on which man depends; while, development is the continued improvement of living standards as [...]
  • Subjects: Agriculture
  • Pages: 5
  • Words: 1517

Uniqueness of Maori Society

However, it is necessary to note that Maori people are represented in the parliament of New Zealand and this contributes to development of the movement aimed at development of Maori culture.
  • Subjects: Anthropology
  • Pages: 13
  • Words: 2178

Hurricanes Causes and Effects

Hurricanes might not really be the main storms on the earth, but their mixture of size and strength make them fatal and the most disparaging storms on earth.'The eye of the hurricane' is a round [...]
  • Subjects: Geography
  • Pages: 4
  • Words: 1410

Physical Geography: Climatology and Geomorphology

In general, geography is the study of distribution of human beings and things over the surface of the earth, and the interrelationship between human beings and the natural world.
  • Subjects: Geography
  • Pages: 2
  • Words: 604

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

The Periodic Table: Structure, Trends, and Blocks

For instance, elements of period 3 have three electron shells, and their properties reflect the filling of these shells. S-block: Found on the left side of the periodic table, the s-block elements have their outermost [...]
  • Subjects: Chemistry
  • Pages: 6
  • Words: 1724

The Heat of Dissolution and Neutralization Reaction

The colorimetric method of analysis is used to determine the heat released during a chemical or physical process: the heat released in such reactions is transferred to the water by the change in temperature, of [...]
  • Subjects: Chemistry
  • Pages: 3
  • Words: 1152

The Effect of pH on Water Holding Capacity of Chicken

In the present laboratory work, the main issue is to investigate the potential relationship between WHC as a measure of moisture content and chicken pH; specifically, the question is to identify the effect of meat [...]
  • Subjects: Chemistry
  • Pages: 3
  • Words: 974

Eggs: The Osmosis Process Investigation

The water was carefully drained after 40 minutes, and the egg's weight in the cup was calculated. Meanwhile, we found that corn syrup had a lower concentration of water molecules; therefore, through osmosis, water molecules [...]
  • Subjects: Chemistry
  • Pages: 1
  • Words: 421

The Controversy of Darwin’s Theory

The scientist knew that the concept of the existence of one common ancestor and the idea of natural selection was a striking contradiction to the aforementioned perspective, as it risked invalidating the role of God [...]
  • Subjects: Evolution of Humans
  • Pages: 1
  • Words: 283

Use of Pesticides in Agriculture

The general narrative on pesticide use in agriculture is the assertion that it saves labor and ensures higher crop yields. These adversities show just how greater danger than the usefulness of pesticide use is in [...]
  • Subjects: Agriculture
  • Pages: 1
  • Words: 346

New York vs. Dhaka City: Comparative Analysis

Dhaka is the capital of the country Bangladesh and a famous city in South Asia, but New York is one of the most popular cities in the world, although not the capital.
  • Subjects: Countries Studies
  • Pages: 1
  • Words: 301

P-chlorophenoxyacetic Acid-preparation of a Synthetic Plant Hormone

The chemical synthesis of 4-chlorophenoxyacetic acid is realized through the reaction of nucleophilic displacement between anions of the 4-chlorophenolate anion and chloroacetate, the product of interaction of which is subjected to acetic acid treatment.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 778

Lemon, Its Origin and Production

India is the largest producer of lemon producing about 16% of the total lemon and lemon products in the world. The Bush lemon tree is a natural and wild lemon.
  • Subjects: Biology
  • Pages: 4
  • Words: 1115

Unknown Bacteria Under Microbiology Lab Tests

The mixture of water and medium was then poured into the petri dish and swirled to completely cover the surface. The colour of the colony was then observed.
  • Subjects: Biology
  • Pages: 4
  • Words: 1164

Botany: The Beavertail Cactus

Phylum Angiospermae is known to dominate the land because it consists of the highest number of species in the kingdom Plantae. Beavertail cactus exhibits several structural modifications in the leaves, stems, roots and flowers.
  • Subjects: Biology
  • Pages: 2
  • Words: 568

Buffer Solution and Determination Changes in pH

It contains either a weak acid and its conjugate base, or a weak base and its conjugate acid. The equation links the measured pH of a solution, hydrogen ions concentration, and the dissociation constant of [...]
  • Subjects: Chemistry
  • Pages: 4
  • Words: 983

The Profile of China. Key Facts

The areas with most of the lakes are found in the Lower-Middle Yangtze plain and the Tibet-Qinghai plateau. Most of the lakes in the Northwest part are salty while the ones in the Southeast are [...]
  • Subjects: Countries Studies
  • Pages: 5
  • Words: 1499

Scientist Charles Darwin & Evolution

By the year 1846, Darwin had a number of publications relating to zoological and geological discoveries of his expedition works that catapulted him in the scientists front rank.
  • Subjects: Evolution of Humans
  • Pages: 5
  • Words: 1361

Experiment: Growing Tomato Plants Under Light

The first seedling was planted into a garden under a condition of strong direct sunlight of about six to eight hours daily and was far away from the light source.
  • Subjects: Agriculture
  • Pages: 3
  • Words: 828

Importance of Parks in Modern Cities

Since the establishment of the idea of public parks by Frederick Law Olmsted over 100 years ago, the role of parks in modern cities becomes more and more significant.
  • Subjects: Geography
  • Pages: 2
  • Words: 648

“The Egg and the Sperm” by Emily Martin Critique

She goes on to describe the way that the ova is represented as passive and waiting for the active sperm to penetrate; drawing on more recent research which shows that the sperm's force is not [...]
  • Subjects: Biology
  • Pages: 12
  • Words: 2577

Mountains Characteristics

The smallest mountains are below one thousand kilometers, the medium mountains have a relative height of one or 2 kilometers and up to 3, and there are the highest mountains which are greater than 2 [...]
  • Subjects: Geography
  • Pages: 2
  • Words: 357

Oxidation States of Manganese Ion

5 ml of KMnO4 were added to the second test tube, which was the color standard for the purple permanganate ion.
  • 1
  • Subjects: Chemistry
  • Pages: 3
  • Words: 826

Materials Used for Ethanol Production

The use of corn in the production of ethanol has a number of drawbacks. This is attributed to the fact that the production of high amount of ethanol requires corn in large quantities.
  • Subjects: Chemistry
  • Pages: 10
  • Words: 2849

Recombinant DNA Technology and pGLO Plasmid Use

Transformation of bacterial cells, which is one of the approaches used in genetic engineering, involves the transfer of genetic material from one bacterium to another using a plasmid vector.
  • Subjects: Genetics
  • Pages: 6
  • Words: 1666

Dubai as a Generic City

A unique feature of his work is the criticism of the concept of identity because he believes it chokes cities of their life and vibrancy.
  • Subjects: Countries Studies
  • Pages: 6
  • Words: 1759

The Benefits of a Protection Dog

Regardless of the fact that protection dogs are animals that can hurt people, they are loving and supportive family members that provide their owners with a wide range of benefits.
  • Subjects: Zoology
  • Pages: 2
  • Words: 596

Anthropology: Research Paradigms and Schools

Initially, anthropology was considered as the science that studies the origin and evolution of the human physical organization and different races excluding the social and cultural characteristics.
  • Subjects: Anthropology
  • Pages: 14
  • Words: 3868

Pull Factors as Drivers of Migration

In this case, people migrate to other countries to further their education. This is because people migrate or move from place to place as a result of these factors.
  • Subjects: Geography
  • Pages: 2
  • Words: 924

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

Global Village Concept Explained

This type of economy is also characterized by "flexible work arrangement" Culture: Global cities are multicultural, owing to among other factors, deregulation and privatization of economies that has attracted foreign workers and traders setting in [...]
  • 1.5
  • Subjects: Geography
  • Pages: 2
  • Words: 521

The Future of Food

The evolution and advancement of technology have influenced the methods of how people grow and consume food. The changes that people have made to nature are very traceable and their inability to predict the outcome [...]
  • 3.8
  • Subjects: Genetics
  • Pages: 3
  • Words: 857

Good to Eat: Riddles of Food and Culture by Marvin Harris

Good to eat is a thought provoking and intellectual journey that the author takes, in terms of the different kinds of food habits adopted by various groups of people and the reasons behind such habits.
  • Subjects: Anthropology
  • Pages: 4
  • Words: 1199

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 Chemical Reaction of Methane and Oxygen Gases

The chemical compositions of the reacting elements or compounds dictate the nature of the reaction. The chemical reaction entails the combustion of methane gas in the presence of oxygen gas, which are the reactants.
  • Subjects: Chemistry
  • Pages: 1
  • Words: 318

The Deeply Rooted in the Present Book by Kenny

For example, the novelty of the author's developments may lie in the fact that she introduces the definition of Quilombo identity into the science of anthropology.
  • Subjects: Anthropology
  • Pages: 3
  • Words: 937

Modern Turkey, Ottoman Legacy and Westernization

Many of the country's customs and practices, such as the traditional Turkish greeting and the importance of hospitality, have their roots in the Ottoman period.
  • Subjects: Countries Studies
  • Pages: 3
  • Words: 962

Is the Body a Limit for the Human Being?

In this essay, the question of whether the body is a limit for the human being is discussed from the point of view of feminism and evolutionism.
  • Subjects: Evolution of Humans
  • Pages: 4
  • Words: 1186

A Light Microscope: Function and Usage

In the optical microscope device, a beam of light hits a specimen located on a slide and then travels through a system of mirrors into the objective. The use of optical circuits inside the eyepiece [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 366

Winogradsky’s Contribution to Biology

In the 1920s and 1930s, he was educated in Russia to investigate nature as a superorganism composed of circulating energy, matter, and life.
  • Subjects: Biology
  • Pages: 2
  • Words: 491

Is Earthworm Beneficial or Harmful to Humans?

Regarding nature, earthworms are animals that directly affect the chemical and biological composition of the soil in which people grow plants, vegetables, and fruits.
  • Subjects: Biology
  • Pages: 1
  • Words: 283

Practical Report: Determination of a Bacteriophage Titer

It is suggested that all the different viruses account for the quantity exceeding the number of stars in the universe. Viruses are called obligate intracellular parasites as they need the host cell in order to [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 358

Nervous System: The Main Functions

The Nervous System is the "command and control center of the body". These electrical impulses go between the brain, the skin, the organs, the glands, and the muscles.
  • Subjects: Biology
  • Pages: 2
  • Words: 577

Computational Biology as an Essential Research Area

In particular, the field of computational biology uses the principles of mathematical analysis, statistics, and computer modeling to test hypotheses and forecasting experimental results.
  • Subjects: Biology
  • Pages: 4
  • Words: 911

UV & VIS Spectroscopy Experiment

The first was to determine the unknown concentrations of samples A and B using linear dilution while the other employed the serial decimal dilution method.
  • Subjects: Chemistry
  • Pages: 6
  • Words: 891

Amperometry: Chemical Analysis

First of all, it should be recalled that the use of electrochemical methods in quantitative analysis is based on the use of dependencies of measured parameters of electrochemical processes on the content or concentration of [...]
  • Subjects: Chemistry
  • Pages: 13
  • Words: 3681