Natural Sciences Essay Examples and Topics. Page 5

2,333 samples

Ocean Fisheries Sustainability Analysis

It is necessary for fishing industries to use better fishing methods in the ocean to ensure that their activities do not endanger the ecological balance. Fish species do not get the chance to replenish and [...]
  • Subjects: Zoology
  • Pages: 2
  • Words: 566

Earth Atmospheric Evolution

It is believed that the different geological evolutions of the earth and the atmosphere have come up with very new species of animals following a transformation of the then existing animals, as well as extinction [...]
  • Subjects: Biology
  • Pages: 6
  • Words: 1719

Greco-Roman v. Modern Sexuality

The Greco-Roman world can be defined as the geographical area around the Mediterranean Sea and the Black Sea. The differences in social ranks affected the spread of knowledge in sexuality among men and women of [...]
  • 5
  • Subjects: Countries Studies
  • Pages: 4
  • Words: 1129

Effects of Industrialized Agriculture

Finally, the corporations that are involved in the process of food production are responsible for the creation of new markets for consumption and the global trade of agricultural products.
  • Subjects: Agriculture
  • Pages: 5
  • Words: 1596

Agriculture Development in Economic Development

This they attribute to the division of labour, where the workers that perform the basic, manual jobs that demand a lot of strength are the least paid, while those that perform the lightest and sophisticated [...]
  • Subjects: Agriculture
  • Pages: 7
  • Words: 1993

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

Australopithecus Africanus Characteristics and Facts

This paper seeks to describe Australopithecus africanus according to: the origins or where the fossils were discovered; identify the range of places they are located on the map; identify the individual who discovered them; the [...]
  • Subjects: Anthropology
  • Pages: 4
  • Words: 1142

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

Farming and Animal Consumption

In essence, debate on farming methods and animal consumption has been a challenge not only to farmers but also to the society. It is, therefore, necessary to consider that numerous changes would be required to [...]
  • 1
  • Subjects: Agriculture
  • Pages: 7
  • Words: 1931

Biochemistry Dogmas and Their Impacts on Biotechnology

Unlike in the past, people have seen the importance of studying life sciences, and with the support from private and public sectors, the number of students enrolling in life science courses is on the rise. [...]
  • Subjects: Biology
  • Pages: 2
  • Words: 591

Utilitarianism as a Teleological Theory

Therefore, in the interest of maximizing happiness for both parties, human beings are supposed to be vegetarians and animals are supposed to enjoy their freedom as animals.
  • Subjects: Anthropology
  • Pages: 3
  • Words: 816

“Skull Wars” by Thomas Hurst

According to prologue of the book 'Skull Wars Kennewick Man, Archaeology, and the Battle for Native American Identity, the author of the prologue mentions the intention of the whites or Caucasians to ascertain themselves as [...]
  • Subjects: Archeology
  • Pages: 7
  • Words: 1867

Using Animals for Research

Research using animals has in turn proved to be very reliable and efficient; many of the cures that have been developed have in one way or the other involved animal research.
  • Subjects: Zoology
  • Pages: 5
  • Words: 1372

New York versus Hong Kong

May be that's why most people in this city are thin compared to the people of New York who tend to be overweight because the restaurants in New York such as MacDonald's serve food in [...]
  • Subjects: Countries Studies
  • Pages: 5
  • Words: 1580

The Major Characteristics of Zambia

A total of eight countries are its neighbors; including Angola to the west, Mozambique, Zimbabwe, Namibia and Botswana to the south, Malawi to the east, Tanzania to the north-east, and the Democratic republic of Congo [...]
  • Subjects: Countries Studies
  • Pages: 3
  • Words: 904

Laboratory Techniques in DNA Manipulation

It includes the replication and production of numerous copies of the inserted DNA utilizing a vector, a DNA molecule capable of transporting foreign DNA, and a host organism.
  • Subjects: Genetics
  • Pages: 7
  • Words: 1202

The ‘Lost Golden City’ in Egypt

This was the largest city to be uncovered in Egypt. This city was later abandoned and the capital relocated to a city known as Amarna.
  • Subjects: Archeology
  • Pages: 1
  • Words: 323

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

Hominin Evolution: Biological and Cultural Aspects

The brain capacity of Homo habilis creatures was greater compared to their ancestors enabling them to become more intelligent. The locomotion of Homo habilis was aided by their legs and forelimbs.
  • Subjects: Evolution of Humans
  • Pages: 3
  • Words: 848

Extracellular Enzyme Production Tests

Microbes produce exoenzymes to metabolize substances in their surroundings, and these microorganisms may be used in biochemistry assays to evaluate the presence and activity of exoenzymes.
  • Subjects: Biology
  • Pages: 6
  • Words: 1178

Wildlife Management and Extinction Prevention in Australia

This paper investigates the threats to wildlife in Australia and strategies for managing and preventing their extinction. In summary, this paper examines the threats to wildlife in Australia and outlines strategies for managing and preventing [...]
  • Subjects: Biology
  • Pages: 10
  • Words: 2902

Autoethnography: “Black” Taxes in South Africa

My brief analysis of the academic literature reveals the significance of the black tax problem, the consequence of which is the compulsion to work harder and a marked decline in the quality of life for [...]
  • Subjects: Anthropology
  • Pages: 8
  • Words: 2446

Blade Runner Through Lens of Anthropology

This paper investigates the movie from the perspective of anthropology in an attempt to uncover the connections between human anthropology and Blade Runner's repercussions and reflections on replicants. Obviously, superiority results in the enslavement or [...]
  • Subjects: Anthropology
  • Pages: 8
  • Words: 2247

Evolution of Humans: The Main Theories

The process of evolution is one of the closest to the human being as people constantly invent new technologies and expand their minds.
  • Subjects: Evolution of Humans
  • Pages: 3
  • Words: 950

Operant and Respondent Conditioning

In respondent conditioning, the stimulus-response dynamic is unidirectional: the US, often not controlled by the organism, elicits a response, but the organism cannot produce a subsequent stimulus since responding does not affect the presentation of [...]
  • Subjects: Biology
  • Pages: 3
  • Words: 953

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

Red Panda: The Animal Observation

They have a diurnal and twilight lifestyle, sleeping in trees during the day and marking their territory, and looking for food at night.
  • Subjects: Zoology
  • Pages: 1
  • Words: 386

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

The Importance of Teaching Alternative Evolution Theories

The theory of evolution should be the basis of the entire course of biology at school. The general representation of the leading alternative evolution concepts should be provided before the arguments for these theories implementation [...]
  • Subjects: Evolution of Humans
  • Pages: 4
  • Words: 1122

Trinidad and Tobago in Country Studies

The economy of Trinidad is considered one of the most developed in the Caribbean: it is ranked third among the most developed economies in the Caribbean.
  • Subjects: Countries Studies
  • Pages: 8
  • Words: 1906

Non-trophic Interaction in Marine Species

An example of non-trophic relationships between marine species is decorator crabs and sponges. Decorator crabs and sponges' relations are an example of mutually helpful non-trophic interaction mutualism.
  • Subjects: Biology
  • Pages: 1
  • Words: 281

Aspects of Chemistry of Oxygen

To sum up, oxygen enters the blood through the process of breathing atmospheric air and travels from the nasal cavity through the trachea and bronchi into the lungs, and then, enters capillaries and erythrocytes.
  • Subjects: Chemistry
  • Pages: 1
  • Words: 279

Epithelial Tissue: Structure and Functions

Because simple squamous epithelium is involved in the composition of the lungs, the heart, blood, and lymphatic vessels, it plays crucial functions in the body.
  • Subjects: Biology
  • Pages: 5
  • Words: 826

Gene Therapy: History, Description, Steps, and Future

The field of research concerning the modification of cells to cure certain diseases became known in the early 1970s. The success of the procedure was then published and performed in 2002.
  • Subjects: Genetics
  • Pages: 6
  • Words: 1722

Gene Therapy and Genetic Enhancement

On the other hand, genetic enhancement targets modifying the genes to augment the aptitudes of an organism outside the ordinary. Somatic gene editing impacts the cells of an individual under treatment and it is inherited [...]
  • Subjects: Genetics
  • Pages: 2
  • Words: 625

Ethics of Napoleon Chagnon’s Yanomami Tribe Study

More specifically, one of the most known anthropologists used a controversial approach in studying the everyday life of the Venezuelan tribe Yanomami concerning the falsification of facts and misinterpretation of cause-and-effect relationships.
  • Subjects: Anthropology
  • Pages: 2
  • Words: 589

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

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

First Reptiles Adaptation: Amniotic Egg Evolution

The amniotic egg evolution is an adaptation that allowed the first reptiles to thrive in a dry land the development occurred over 300 million years ago. The robust shell protects the egg from drying out, [...]
  • Subjects: Biology
  • Pages: 1
  • Words: 336

Qin Shi Huang: The Big Dig

The story of the Tomb of Qin Shi Huang begins in 1974 when farmers from Xi'an dug into one of the fascinating excavations of the 20th century.
  • Subjects: Archeology
  • Pages: 4
  • Words: 1116

Researching the Physiology of the Eye

It then progresses to the pupil, where the size of the pupil varies depending on the intensity of the incoming light, a phenomenon referred to the as pupillary light response.
  • Subjects: Biology
  • Pages: 4
  • Words: 1122

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

Improving Stress Resistance in Agricultural Crops

The biotechnology involved in producing such crops faces many difficulties and there are a lot of considerations of the methods used to improve the crop's resistance that need to be assessed.
  • 5
  • Subjects: Agriculture
  • Pages: 9
  • Words: 2810

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

Cultural Anthropology, Gender and Kinship

Gender is the cultural construction of whether one is female, male, or something else. Gender stratification is the unequal distribution of social value by gender.
  • Subjects: Anthropology
  • Pages: 4
  • Words: 1125

Territorial Claims of Antarctica and the Antarctic Treaty

Given this argument, the paper traces the history of Antarctica to fully explore how and why the claims came about, the individual claims of the countries and the treaty and the system it is included [...]
  • Subjects: Countries Studies
  • Pages: 20
  • Words: 5458

Free Radicals, Oxidative Stress, and Antioxidants

The presence of ROS in excess causes oxidative stress in the body, leading to the oxidation of proteins and lipids and the transformation of their structures and roles in the body.
  • Subjects: Chemistry
  • Pages: 6
  • Words: 1666

The Feeding Behavior of the Walrus

The walrus forages on the sea floor and platforms of sea ice. They must live in shallow seas, especially close to the shores.
  • Subjects: Zoology
  • Pages: 14
  • Words: 663

Senegal’s Population and Migration Profile

As per current projections, the population of Senegal is projected to increase for the remainder of the century. Roughly 42% of the population of Senegal lives in the rural area.
  • Subjects: Countries Studies
  • Pages: 6
  • Words: 1675

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

How SCOBY Changes Its Environment: Lab Experiment

The means of SCOBY growth in black tea, green tea, chamomile tea, and distilled water are not significantly different. The means of SCOBY growth in black tea and distilled water are not significantly different.
  • Subjects: Biology
  • Pages: 4
  • Words: 1214

Microbiology and Its Role in Healthcare

Microbiology, as a broad scientific field, entails an array of concepts and issues that are of pivotal relevance to health care as a whole and the science of pathophysiology, in particular.
  • Subjects: Biology
  • Pages: 1
  • Words: 296

Determination of the Enthalpy of an Acid-Base Reaction

Of note, caution was taken to minimize the time of contact with the container as this would raise the temperatures of the container hence giving a false impression of the actual temperatures.
  • Subjects: Chemistry
  • Pages: 3
  • Words: 827

The Concept of Selective Breeding

In order to carry out selective breeding, the breeder must first of all have a breeding stock with the desired qualities.
  • Subjects: Biology
  • Pages: 10
  • Words: 2724

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

Kiwi Fruit: Nutrition and Biological Molecule

The kiwi fruit is botanically referred to as Actinidia deliciosa and the common name used is Chinese gooseberry. The primary function of starch is derivation of energy.
  • Subjects: Biology
  • Pages: 2
  • Words: 594

Lipids: Fatty Acids and Glycerols

The membrane, made up of lipids, facilitates the fluid movement and transportation of the vital elements of the cell. A lack of these vitamins in the body leads to various diseases and conditions.
  • Subjects: Biology
  • Pages: 3
  • Words: 916

Toxicology: Is Water a Toxic Substance?

It is well known that the solubility of ethanol in water is unlimited. Toxicity could be a characteristic of the formation of the reactive oxygen species which can also be present in water.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 550

Seawater vs. Brackish Water Reverse Osmosis

The concentrations of seawater and brackish water differ considerably; hence, there is a distinction involving the concentrate acquired from seawater desalination plants and brackish water desalination plants.
  • Subjects: Chemistry
  • Pages: 2
  • Words: 539

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

Pesticides’ Effects on Rivers and Streams

Once the pesticides are in the water, they affect aquatic life and the entire organisms in the food chain. Water is a basic need for all living organisms, and the harmful effects of pesticides in [...]
  • Subjects: Chemistry
  • Pages: 9
  • Words: 2528

Types of Saturation Indices: Calcium Carbonate

According to Stein, the value of the index describes the stability of the calcium carbonate contained in water. In the event that the value of LSI is at zero, then water is said to be [...]
  • Subjects: Chemistry
  • Pages: 6
  • Words: 1698

Vitamin B6: Biochemical Overview

In order to maintain the proper percentage of Vitamin B6 in the patient's body, it is imperative that the dietary allowances of the vitamin should be in direct proportion to the patient's age; more to [...]
  • Subjects: Chemistry
  • Pages: 3
  • Words: 861

Overview of Polyether Ether Ketone

The exceptional properties of polymers are determined by the extent and the organization of the molecular chain. According to Kurtz, the melting temperature is an indicator of the thickness and flawlessness of crystals.
  • Subjects: Chemistry
  • Pages: 6
  • Words: 1681

Genetic Male Pattern Baldness

Vertex hair loss: Vertex hair loss can be observed on the top of the head which is crown area and does not touch the hairline of the forehead.
  • Subjects: Genetics
  • Pages: 10
  • Words: 2770

Osmosis Transport Across the Cell Membranes

It is the difference in concentration of water across a semi-permeable membrane drives the process. The process is facilitated by the disparity in potential of water across the semi-permeable.
  • Subjects: Biology
  • Pages: 2
  • Words: 322

UNESCO Paper: The Grand Canyon National Park

The springs and seeps out of the canyon walls sustain eleven percent of the plants in the park. In some of the management activities, local citizens and volunteers have been involved.
  • Subjects: Geography
  • Pages: 6
  • Words: 1732

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

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

Application of Catalyst and Energy Production

This work entails developing a catalyst coupled with the construction of a good reformer in the field of catalysis. The catalyst is released at the end of the reaction and may be used again.
  • Subjects: Chemistry
  • Pages: 35
  • Words: 8961

The Evolution of Insect Wings

This theory states that wings developed from a section of the legs of wingless insects. According to Carpenter, wings developed from gills through the evolution of gene expression with similarities between winged and wingless insects.
  • Subjects: Biology
  • Pages: 10
  • Words: 2695

The Euphorbia Plant Modification and Adaptation

In the place of the leaves the plant has thorns which are used to protect the plant from its predators and help in conserving water for the plant as it does not lose water in [...]
  • Subjects: Biology
  • Pages: 3
  • Words: 193

Human Circulatory System and Evolution

The coronary circulation involves the movement of blood through the tissues of the heart while the systemic circulation involves taking blood to all the rest of the body tissues and back to the heart".
  • Subjects: Biology
  • Pages: 2
  • Words: 534

The Climate in New York, Miami and Chicago

Although these locations are not enough to embrace the entirety of the varied American climate, they offer unique characteristics of the target settings, such as the proximity to the ocean, the propensity toward rapid changes [...]
  • Subjects: Geography
  • Pages: 5
  • Words: 1460

Fatty Liver and Gastrointestinal Tract Disease in Dogs

This research paper analyzes the knowledge surrounding the issue of hepatic steatosis in dogs and reveals a dearth of knowledge pertaining to the disease's impact on dogs' gastrointestinal tract.
  • Subjects: Zoology
  • Pages: 5
  • Words: 1447

Potassium Polyacrylate Definition

Potassium Polyacrylate is a substance added to the soil to absorb and store water for the plants. Potassium Polyacrylate can also absorb and release fertilizers into the soil, the same way it does to water.
  • Subjects: Agriculture
  • Pages: 2
  • Words: 574

The Strait of Hormuz Choke Point

The oil that goes through the Strait of Hormuz Choke Point in ships is transported to countries like India, and China. The Strait of Hormuz Choke Point is well known for its participation in oil [...]
  • Subjects: Geography
  • Pages: 2
  • Words: 601

Ancient Chinese Inventions and Contributions

In spite of this stereotype, China is the Motherland of many inventions of the past. Gunpowder is one of the most significant and well-known inventions of ancient China.
  • Subjects: Countries Studies
  • Pages: 3
  • Words: 846

Achondroplasia Genetic Disorder: Pedigree

The pedigree problem is generally featured with the necessity to provide the correct connections among the family members in a genetic history chart.
  • Subjects: Genetics
  • Pages: 3
  • Words: 819

Bermuda Triangle and Its Definition

According to Winer, "the initial claims of the mysterious disappearances in the Bermuda also known as the 'Devils Triangle' dates back to September 19th 1950.
  • Subjects: Geography
  • Pages: 3
  • Words: 1002

Water and Energy Requirements of Curcubita Maxima

Ovaries are smaller relative to the male ones and are found at the base of the flowers. The use of the fertilizers should however depend on the degree of the fertility of soil where these [...]
  • Subjects: Agriculture
  • Pages: 2
  • Words: 733