The Importance Of Life On Earth

Describe the important chemistry of early earth and how this may have given rise to life forms.

6. The atmosphere of early earth primarily may have consisted of a reducing atmosphere thick with water vapor, along with nitrogen and its oxides, carbon dioxide, methane, ammonia, hydrogen, and hydrogen sulfide.

The oxygen revolution: During the Proterozoic, biotic system were being established, which gave rise to biomass of the prokaryotic organisms like the “benthic and planktonic photosynthesizing organisms” Due to the vast developing diversity of environment, organisms could well adapt to these various environments, which increased the input of oxygen on Earth. Hence, in order for the oxygen to be accumulated in the atmosphere, Iron and Sulfur like oxygen-sinks had to be depleted.

Chemical evolution is the main exploratory clarification for the birthplace of life. Like every scientific theory, the hypothesis of chemical evolution has an example part that makes a case about the common world and a procedure segment that clarifies that patter. The example part is that notwithstanding little atoms, complex carbon-containing substances exist and are needed forever. The procedure part is that in Earths early history, straightforward concoction mixes consolidated to frame more mind boggling carbon-containing substances before the advancement of life. The hypothesis keeps up that inputs of vitality prompted the development of progressively complex carbon-containing substances, coming full circle in an intensify that could recreate

The atmosphere was carbon dioxide with barle an oxygen. But as the Earth became colder, most of the water formed the oceans.

CO2 tends to remain in the atmosphere for a very long time. Water vapor, on the other hand, can easily condense or evaporate, depending on conditions. Water vapor levels therefore tend to adjust quickly to the prevailing conditions, such that the energy flows from the Sun and re-radiation from the Earth achieve a balance. CO2 tends to remain fairly constant and therefore behave as a controlling factor, rather than a reacting factor. More CO2 means that the balance occurs at higher temperatures and water vapor levels.

Early Earth is predicted to have been a very hostile environment. Due to high levels of tectonic activity, there were thought to have been many volcanic eruptions. These eruptions mixed with high temperatures caused an out-gassing of volatile molecules and initiated gases such as methane, ammonia, hydrogen, nitrogen, and carbon dioxide to exist. However, even after the introduction of these gases, oxygen was still not present. The absence of oxygen meant that the earth had no ozone layer, and was therefore exposed to large amounts of UV radiation. Early Earth was under very dangerous conditions and was unstable.

We all know that atmosphere is continually evolving. We have had ice ages and hotter periods when gators were found in Spitzbergen. Ice ages have happened in a hundred thousand year cycles for the last 700 thousand years. There also have been time periods that seemed to have been hotter than the present in spite of CO2 levels being lower than they are currently. Overall what I am saying is that we have had the medieval warm period and the little ice age. Because of these evolutions there has been different effects on the earth.

“The early Earth was probably partially or largely molten” (The Solar Nebula. N.d). Over time the earth cooled and the crust was formed. “Much continental crust, the most silica rich and least dense kind, has been produced by 2.5 billion years” (The Solar Nebula. N.d). Over a period of time and a series of volcanic eruptions water vapor was thrown into the atmosphere and eventually condensed to form the oceans. From a spinning cloud of dust the evolutionary process began and the Earth that is inhabited today came into existence according to the nebular hypothesis.

There are so many ways living organisms like our selfs (Human beings) rely on the atmosphere. It is one of the key reasons why there is life on earth to begin with. Here are some reasons on why we as living organism alongside many other living organism rely on the atmosphere. First off the atmosphere provides us with oxygen which is what we need to breathe and keep our bodies working. Without the atmosphere we and many other living organisms would die or not even be alive to begin with. Just try and hold your breathe for a couple of seconds, you can't because your body needs oxygen and will force you to open your mouth and get the oxygen your body needs in order to work correctly. Also, the atmosphere acts as a shield against radiation that

The over loaded carbon dioxide trapped in the atmosphere like a warm blanket held the heat from lease to the space. Climate change is a part of the Earth's history. There have been dramatic fluctuations in overall average temperature

Precambrian time is split into Pre-Archean time (the formation of earth to 3.8 Billion years ago.) (Condie) During Precambrian time the oceans and atmosphere was created. The atmosphere was said to be formed from volcanic outgassing, which is the release of large amounts of gases during volcanic eruptions. These gasses

What is life? This is a difficult question to answer, largely because life itself is not a simple concept. About four thousand five hundred million years ago the Earth collided with a planetoid the size of Mars. At this time, fragments orbiting the Earth formed the

Somewhere in the flotsam of celestial material that makes up the arms of the Milky Way is a little planet called Earth. Home to roughly seven billion people, Earth plays host to a race that is both incredibly sadistic and unspeakably noble. One facet of this dichotomy stems from a concept known as religion. Religion is a set of spiritual beliefs shared by a group of people.

One of the main theories is that life started by chemical means in a rock where water, methane, ammonia and hydrogen were all present then with the added effect of lightening simple organic molecules formed the building blocks of life. There was an experiment that was conducted in 1953 by Miller and Urey that supports that the conditions above could stimulate organic compounds to form. *copied “ The Miller-Urey experiment attempts to recreate the chemical conditions of the primitive Earth in the laboratory, and synthesized some of the building blocks of life.