Free Essays on Natural Selection to Get Inspired & Learn by Example

Introduction

Evolution is the alteration of nheritable traits of the biological populations over a series of generations. In biology, it means to observed organism’s changes, to the descent of a common ancestor and at a technical level to a gene frequency change over time. The processes lead to diversity over a large biological organization, including the molecular evolution’s level, individual organisms and the level of species (Gregory 2009). Each and every life on Earth originated from a common descent from a last universal ancestor, whose time of existence is approximated at 3.5-3.8 billion years ago. Repeated creation of Continue reading...

Why We Get Sick

Chapter 6. Toxins, New, Old, and Everywhere
There are lots of novel toxic hazards to which we are exposed. There is alcohol, agricultural pests, nitrates, toxic dust and fumes, spray insecticides that enormously harm our health day by day. It seems obvious that our modern age must be more hazardous than that one our ancestors lived in. But this is not true because the contest between consumer and consumed can generate an evolutionary arms race.
Most plants contain toxins that would be harmful if eaten in more that a minimal amount. These toxins keep herbivores from eating the plants Continue reading...

Background to the Problem

The ongoing dispute about the origins of the planet and every living and non-living thing in it has had a long history. In this dispute, we have the theories of evolution on the one hand and creationism on the other. In this research, we try to propose a study that investigates the different facets of the evolutionary theories and also that of creationism to shed light on some of the most common and perhaps longest controversies in an area where there is an overlapping of numerous fields such as philosophy, theology, biology, and other areas of science. The objective Continue reading...

Introduction

What is evolution?
It is a gradual or a slow process in which organisms change into a different form and mostly the new for is better than the old one. As the organisms respond to changes of environment, they develop features that will enable them survive in the new environment and thus evolving.

In the evolution, we have four forces of evolution, and they are as follows:

1. Mutation; this is by which the genes or chromosome change heritable. The random variation of the genes is due to additions, deletions or substitutions of the nitrogen bases of the DNA sequence.
2. Gene flow; this is whereby two populations exchange their genetic materials; it Continue reading...

What chemicals do Nitrosococcus oceani and Nitrosopumilus maritimus consume from their ocean environment?  How does the abundance of these chemicals influence their success and abundance?  What is the relationship between nutrient availability and natural selection, in general?
Nitrosococcus oceani and Nitrosopumilus maritimus are examples of single celled organisms which are part of the kingdom Archaea. They are totally separated from the bacteria and other organisms (Stewart, n.d.). They are very important for some of the natural processes in the environment especially for the nitrogen and methane cycle. They are also a major part of the biological and biomass processes Continue reading...

The theory of evolution has received much attention by the clergy and the scientific community alike ever since Charles Darwin proposed it. It was proposed in order to explain the source of variation among different organisms as well as explain the possible beginning of life on earth. There have been diverse debates on this theory and the people from all walks of life are divided in perspective due to it. In order to make a clear and strong stand about evolution – whether it is valid or not – it is expedient that several concepts relating to it be understood. All Continue reading...

All the living beings are believed to have developed over a period of time. Evolution process is the gradual change that changes living organism to a different form in order to adapt to the changes in the environment. The process of evolution is slow, and it describes why some animals exist while others become extinct. For example, the evolution process explains why the dinosaurs became extinct over millions of years ago. In order to understand the concept of evolution, we will look at the following key definitions and concepts.
Species is the smallest units of classification where the members Continue reading...

Evolution is one of the most important theories formulated by Charles Darwin in the year 1859, which affects the views of individuals on the relationship between humans and the natural world. The evolutionary theory explains about the transformation of species. Evolution exploits individual variations that are purposeless by eliminating those that confer no benefit to the organism. According to Darwin, the evolutionary theory accounts for change within the species and the emergence of new species in naturalistic terms. The study of genetics explains about the transmission of traits from parents to the offsprings, which helps to predict the chances Continue reading...

The evolution of the peppered moth can be dates to around 200 years back which was a consequence of the industrial revolution. The evolution was based on the colour variation between the two species. The evolution was based on the concept with the increase in the number of dark-coloured moths as a result of industrial pollution. The rapid increase in these species led to the decrease in the original species in the environment. Thus, the phenomenon is known as industrial melanism. This was the first case of natural selection which was mentioned by Charles Darwin. The peppered moth is Continue reading...

Humans are curious beings. There is always a need to know more – to understand more about the world we live in. Scholars, researchers, scientists have long been proven to exert efforts in meaning-making and information dissemination. However, the scientific community will always be in conflict with the Church. Still, the efforts do not dwindle. Prominent scientists have changed the ways of thinking of the primitive society. One of these scientists is Charles Darwin.
Charles Darwin is a British scientist and the Father of Evolution and Natural Selection. Initially, he took up medicine at Edinburgh University, and then studied divinity Continue reading...