• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

life on earth

Extracts from this document...

Introduction

Earth Before Life

After reading the article “Earth before Life,” the concepts that were addressed in the featured segment were how the atmosphere was developed and how the earth was formed. These concepts addressed the beginning of evolution and the adjustments to its surrounding. The article states “Chemical reactions and Physical processes on the early Earth created an environment that made life possible. And life, once it began, transformed the planet’s chemistry. Biological and geologic histories are inseparable.”
Earth, a giant ball of hot gases, rocks and dust, went through a period of catastrophic and intense formation approximately 4.5 billon years ago. This was caused by particles of gases being drawn together and compressed, giving off a large amount of heat. Finally the earth cooled down enough for water vapor to condense and form liquid water. Rain fell from the sky for millions of years and covered most of the Earth with oceans and lakes. The oceans contained chemicals called nucleotides and amino acids that existed in little blobs surrounded by a membrane. These blobs are called microspheres and were not real cells but they were able to replicate themselves and reproduce.

...read more.

Middle


Air pollution can affect ones health in many ways. Air pollution can result in long-term and short term effects. The short term effects of pollution can cause irritation of the eyes, upper respiratory infections of the nose and throat which can lead to bronchitis and pneumonia, headaches, allergic reactions and nausea. Short term pollution can intensify the medical conditions of individuals who have asthma and emphysema. Some of the long-term effects of pollution are lung cancer, respiratory disease, heart disease and damages to the brain, nerves, kidney and liver. Continuous exposure of air pollution can affect the lungs. When the sun is hot, emissions from car engines, factories, garden equipment and gasoline evaporation causes chemicals react with heat and sunlight to form ozone. Ozone pollution can cause inflammation and irritate the lungs. This can be a problem for those who have respiratory problems. Everyone stands a chance at being effected by the pollution which the earth contains. When unwanted wastes are burned and exposure to illegal dumping, the earth’s atmosphere can have an ever lasting effect due to the flames from the fire becoming hazardous to ones health when breathed in.
...read more.

Conclusion


All though the theory of evolution is supported by allot of scientific evidence, evolution is not accepted by everyone. Some believe in the biblical theory of the New Earth creationists of how the earth, its life forms, and the rest of the universe were created by God during a six day, 144 hour, interval, fewer than 10,000 years ago. The Old Earth creationists believe that geology and radiometric dating has shown that the world is billions of years old. They believe that God created the Earth itself, the earth's life forms, and the rest of the universe at that time. The Scientific views of the origin of the universe occurred about 15 billion years ago. The earth coalesced about 4.5 billion years ago. Life subsequently began, probably as bacteria deep in rocks, and has been evolving ever since. These various processes have been driven by purely natural forces, without input from God.

...read more.

This student written piece of work is one of many that can be found in our GCSE The Earth and Beyond section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE The Earth and Beyond essays

  1. AS Chemistry: Chemistry of the Stratosphere

    As CFCs became increasingly popular it was suggested that the as they reached the stratosphere they where being broken down by the intense ultra-violet radiation. The possible of Ozone depletion to CFCs led to the signing of 'The Montreal Protocol', which detailed the phasing out of CFCs and HCFCs.

  2. The Evolution and Current Composition of the Atmospheres of Earth and Mars

    The strong evidence of liquid water on Mars 3.6 to 4 billion years ago suggests a thick greenhouse. A CO� atmosphere becomes unstable with liquid water around. CO� was the major constituent of Mars's early atmosphere, and still is (Table 1).

  1. Sustaining life on Mars - the survival of the human race.

    This ionization combined with other layers of atmosphere can possibly aid in deflecting harmful radiation, which floats free throughout space. In order to sustain life anywhere it is believed that very few basic elements are needed. These elements are water, oxygen, carbon, nitrogen, and energy.

  2. Greenhouse Effect.

    the future, research institutes use climate modelling to simulate the climate and oceans over many decades. So far model simulations point to global temperature rises of approximately 3 degree C in the next 100 years, which doesn't sound much. Consider however that the difference between average global temperatures now and the last ice age (not strictly correct but sounds better!)

  1. Describe and explain the long-term effects of large-scale deforestation on the earth's atmosphere.

    Yet, these latter cases constitute only a very small part of the total deforestation. Sustainable development Sustainable development is the using of resources with out directly affecting the environment. This way of farming and agriculture is currently being used worldwide in an attempt to reduce the potential affect that humans are having on the rain forests.

  2. In the beginning God created the Heavens and the Earth.

    None of the arguments concerning the physical nature of the development of our earth are as secure as the fossils are embedded in the rocks! What we do know undeniably as facts, can only lead us to conclusions which depend upon our interpretation of the facts.

  1. How construction and the built environment can both benefit and harm the natural environment

    as heavy rainwater is channelled too rapidly into rivers and waterways causing them to burst their banks. Before Victorian engineers opened a new canal, they would first drive herds of sheep through the cuts. The hooves of the sheep would compact the ground, thus preventing the canal water from draining away into it.

  2. Physics crater investigation

    During the experiment I had to be aware of some sources of errors. For instance if the temperature of the room had changed during the experiment, which could make the air moist, therefore making the sand more moist which will increase the density.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work