Biosphere is defined as that part of the earth and atmosphere in which many smaller ecosystems exist and operate.
It is subdivided into the lithosphere, atmosphere, and hydrosphere. The atmosphere is the surrounding thin layer of gas. The hydrosphere refers to liquid environments such as lakes and oceans that lie between the lithosphere and atmosphere.
Requirements for life For organisms to live, certain environmental conditions such as proper temperature and moisture must exist, and the organisms must be supplied with energy and nutrients food.
Nutrients contained in dead organisms or waste products of living cells are transformed back into compounds that other organisms can reuse as food.
This recycling of nutrients is necessary because there is no source of food outside the biosphere. Words to Know Decomposition: The breakdown of complex molecules—molecules of which dead organisms are composed—into simple nutrients that can be reutilized by living organisms.
Power that can be used to perform work, such as solar energy. Warming of the atmosphere that results from an increase in the concentration of gases that store heat, such as carbon dioxide.
Molecules Life outside our biosphere essay organisms obtain from their environment; they are used for growth, energy, and various other cellular processes. The cycling of biologically important elements from one molecular form to another and back to the original form.
Process in which plants capture light energy from the Sun and use it to convert carbon dioxide and water into oxygen and organic molecules. Chemical reaction between organic molecules and oxygen that produces carbon dioxide, water, and energy.
Energy is needed for the functions that organisms perform, such as growth, movement, waste removal, and reproduction. It is the only requirement for life that is supplied from a source outside the biosphere. This energy is received from the Sun.
Plants capture sunlight and use it to convert carbon dioxide and water into organic molecules, or food, in a process called photosynthesis. Plants and some microorganisms are the only organisms that can produce their own food. Other organisms, including humans, rely on plants for their energy needs.
The major elements or chemical building blocks that make up all living organisms are carbon, oxygen, nitrogen, phosphorus, and sulfur. Organisms are able to acquire these elements only if they occur in usable The Beni Biosphere Reserve in Bolivia.
Reproduced by permission of Conservation International. In a process called the nutrient cycle, the elements are transformed from one chemical form to another and then back to the original form. For example, carbon dioxide is removed from the air by plants and incorporated into organic compounds such as carbohydrates by photosynthesis.
Carbon dioxide is returned to the atmosphere when plants and animals break down organic molecules a process known as respiration and when microorganisms break down wastes and tissue from dead organisms a process known as decomposition. In the past, the rate at which nutrients were transformed from one chemical form to another did not always equal their transformation back to their original form.
This has resulted in a change in the relative concentrations of chemicals such as carbon dioxide and oxygen in the biosphere. The decrease in carbon dioxide and increase in atmospheric oxygen that occurred over time was due to photosynthesis occurring at a faster rate than respiration.
The carbon that was present in the atmosphere as carbon dioxide now lies in fossil fuel deposits and limestone rock. Scientists believe that the increase in atmospheric oxygen concentration influenced the evolution of life.
It was not until oxygen reached high concentrations such as exist on Earth today that multicellular organisms like ourselves could have evolved. We require high oxygen concentrations to accommodate our high respiration rates and would not be able to survive had the biosphere not been altered by the organisms that came before us.
Current developments Most research on the biosphere is to determine the effect that human activities have on the environment—especially on nutrient cycles.
Application of fertilizers increases the amount of nitrogen, phosphorus, and other nutrients that organisms can use for growth. These excess nutrients damage lakes, causing overgrowth of algae and killing fish.
Interest in long-term, manned space exploration has also generated research into the development of artificial biospheres. Extended missions into space require that nutrients be cycled in a volume no larger than a building.
The Biosphere 2 Project, which received a great deal of popular attention in the early s, provided insight into the difficulty of managing such small, artificial biospheres. The idea behind the project was to establish a planet in miniature where the inhabitants not only survived but learned to live cooperatively and happily together.Is it possible that intelligent life in outer space exists?
Could it be that Earth has already been visited by aliens? Possibility Of Intelligent Life In Outer Space Philosophy Essay. Print Reference this. Published: 23rd March, Take a look at what our essay writing service can do for you: Click Here!
Free coursework on Life Outside Our Biosphere from barnweddingvt.com, the UK essays company for essay, dissertation and coursework writing. Life Outside Our Biosphere Essay - Life Outside Our Biosphere The fragile balance of the Earth's ecosystem is constantly being disrupted. Overpopulation is placing heavy strain on the world's resources. The biosphere is made up of the parts of Earth where life exists. The biosphere extends from the deepest root systems of trees to the dark environment of ocean trenches, to .
Dissertation Writing Service. Because the biosphere is made up of all life, it too is fragile. Humans can have a huge impact on the biosphere, in both good and bad ways.
The growth of the human population on Earth means there is less room for other species. Whether we are vegetarians or meat-eaters, the energy we need and the protein we need to build our bodies comes. The free Social Issues research paper (Life Outside Our Biosphere essay) presented on this page should not be viewed as a sample of our on-line writing service.
If you need fresh and competent research / writing on Social Issues, use the professional writing service offered by our company. Impossible or Imporbable: Life Outside Our Solar System Essay - The two greatest faults of mankind are our assumption that what we do is the right, normal way, and .
Life Outside Our Biosphere.
Essay by Anonymous User, A+, June download word file, 4 pages, 1 reviews. Downloaded 64 times. Keywords Earth, Population, colonies, Colonization, Fossil Fuels. 0 Like 0 Tweet. The fragile balance of the Earth's ecosystem is constantly being disrupted.
Overpopulation is placing heavy strain on the world's /5(1). Essay Life Outside Our Biosphere The fragile balance of the Earth's ecosystem is constantly being disrupted. Overpopulation is placing heavy strain on the world's resources. We are burning all our fossil fuels to create the energy we need, and clearing our rainforests to make enough farmland to feed everyone.
The ozone layer is slowly eroding, exposing us to harmful UV light.