Essays on Ultraviolet Rays

The ozone is a layer of gasses in the stratosphere that protects life on Earth against ultraviolet rays from the sun (Aggarwal et al., 1). Anthropogenic activities leading to the emission of nitrous oxide and chlorofluorocarbons can result in the destruction of the ozone layer. Organohalogens also contributes to the destruction of the ozone layer (Lee, 858). The depletion leads to secondary ozone layer close to the ground called terrestrial ozone layer that is responsible for the degrading effects on humans, plants, and their environment. In the article published on August 27, 2009, on the New York Times, Dean ( ...

Cancer is the second leading cause of death in the United States. It is a term given to a series of diseases in which the cells within human body grow at an abnormal rate, thereby damaging healthy tissues . While normal cells grow and die at a specific rate according to the requirements of human body, the growth of cells is extreme when compared to the death of cells in cancerous patients. Such an abnormal growth in turn leads to tumors, which consist of a huge mass of tissues. However, in patients suffering with cancer related to the blood, there ...

In the book, Urban Sprawl, Global warming, and the Empire of Capital, Gonzalez places all the faults on the Government and American business leaders. He says that they are responsible for the global climate change. He opposed all the efforts used in the account of global warming problem. The definition and explanation were based on transnational factors such as the greenhouse effect. The core researchers expounded and affirmed that global climatic change was due to economic transition and development. They also argued that it was due to enter border development of goods and services. Others argued the global climatic ...

Debra Dutton

BIO 201 Pollution and the Human Body The human body has an incredible defense and healing system. It uses the various senses like smell, sight and taste to filter the food, air and water as they get into the body. The skin safeguards the body tissues and internal organs from environmental hazards. The skin also senses the variations in environmental temperatures and acts as the body’s stimuli in controlling the body temperature. The brain and the nervous system are part of the complex response and flight mechanism that responds to emergencies and dangers. An army of ...

Skin cancer is the most common form of cancer in the United States. CDC has categorized skin cancer as an epidemic (CDC, 2013). It has been reported that more than a million cases are reported each year in the US, with approximately 120,000 cases of melanoma, the deadliest among all forms of skin cancer. The incidence of skin cancer has shown to be rising most rapidly in young adults between the ages of 18-29. It has been hypothesized that this increase in the incidence of skin cancer is due to change in behavior of young adults, including, exposure to ...

The sun is about 864000 miles wide and filled with sweltering hot gases. Hydrogen is the most abundant element present in the Sun, composition of the Sun by its constituent mass is 71% hydrogen (H), 27% helium (He) and 2% other heavier elements. Inside the Sun the gravitational pull compresses the gases, and increase the temperature and pressure at the core. (CAIN, F., 2009) The temperature is about 10000°F on the surface and more than 28 million degrees Fahrenheit at the core of the sun. The pressure at the core of the sun is 250 billion times the ...

Every day, researchers come up with new studies that document the fact that teens are fighting shy of sunscreens. Teenagers have ignored the possible harmful consequences of not using sunscreens and continue to do so. This paper not only attempts to find the reasons of this careless behaviour of teenagers regarding sun protection, but it also explains the negative consequences of failure to adopt sunscreens in routine life. These results have been further categorized into short-term and long-term effects in order to capture the severity of the matter at hand. The excuses that teenagers find and hold on ...

Different Types of Lighting Available in the Market:

A broad range of lighting lamps is available in the market. Following lights are commonly used in big super markets, hotels and other bigger space places: Incandescent: this type of light is also known as incandescent bulbs. The bulb provides light by heating a specific material kept inside the bulb in the form of filament with electricity. The filament is supported with wire on both sides. The incandescent bulbs are widely accepted and compatible with any temperature. Bulbs do not carry any hazardous material and simple in technology. Metal Halide Light: These lamps are known for their high ...

Introduction

Contrary to what most people believe, American men are more prone to skin cancer than women (Voiland, 2008). In fact, according to statistics, more men die due to skin cancer than women every year and there are reasons behind this fact. This paper will identify some of the most common reasons why men are more prone to skin cancer than women using strong evidences from journals and publications synthesized over the internet and from books.

What is Skin Cancer?

Before trying to compare both sexes’ vulnerability for skin cancer, it may be wise to identify first and know the nature of the said disorder. ...