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An essay or paper on The Importance of Water Resources
Could this essay's first half be considered an indulgence of my childhood fascination with nature? That argument could have merit, but I have always been a "big picture" kind of thinker, even as a teenager. I am writing this essay primarily to help manifest FE technology in the public sphere and help remedy the deficiencies in all previous attempts that I was part of, witnessed, heard of, or read about. The biggest problem, by far, was that those trying to bring FE technology to the public had virtually no support from the very public that they sought to help. My journey's most important lesson was that , and an egocentric humanity living in scarcity and fear is almost effortlessly manipulated by the social managers. John Q. Public is only interested in FE technology to the extent that he can immediately profit from it. Otherwise, he goes back to watching his favorite TV show. It took many years of disillusionment for that to finally become clear to me. While this essay and all of my writings are provided for free to humanity and anybody can read them, I intend to only reach a very tiny fraction of humanity with my writings, but that tiny fraction will be sufficient for my plan to succeed. The readers that I seek have a formidable task ahead of them, but nothing less is required for my approach to have any hope of bearing fruit. This essay and my other writings are intended as a course in (also called "big picture") thinking. Studying the details deeply enough to avoid misleading superficial understandings is also a key goal. I am an accountant by profession, but one of the world's leading paleobiologists surprisingly read an early draft of this essay and informed me that it was one of the best efforts that he ever saw on the journey of life on Earth. There was nobody on Earth whose opinion I would have respected more than his, so I do not think that I am asking readers of this essay's first half to humor me. Every sentient being on Earth should know the rudiments of what this essay's first half covers.
The Cambrian Explosion had several phases to it, with explosions of life and mass extinctions, and a general atmospheric oxygen rise accompanied it. Anoxic conditions coincided with extinctions. would not be that affected by what complex life was doing (although anaerobes were generally driven underground and into the seafloor), but the rise of complex life led to new ecosystems. Before the rise of animals, the seafloor was smooth and “stiff,” but burrowing animals had profound impact on seafloor ecosystems and may have played a prominent role in creating the ecosystems themselves. Corals created new ecosystems, as life terraformed Earth.
Life Under The Water Essay: Alumni FAQ
As will be explored in this essay, all of the marine life have anoxia as a suspected contributing cause, so oxygen is a major area of interest among extinction specialists. Whether oxygen levels were also significant contributing causes of evolutionary innovation is another area of interest today. Again, to food chains. Even if the first animals did not respire anaerobically, they adapted to aerobic respiration early on and then became dependent on it. There would be no going back for animals; all except those few adapted to and anoxic environments went “all in” with aerobic respiration.
Land colonization was perhaps the Devonian’s most interesting event. The adaptations invented by aquatic life to survive in terrestrial environments were many and varied. Most importantly, the organism would no longer be surrounded by water and had to manage . Nutrient acquisition and reproductive practices would have to change, and the protection that water provided from was gone; plants and animals devised methods to protect themselves from the Sun’s radiation. Also, moving on land and in the air became major bioengineering projects for animals. Breathing air instead of water presented challenges. The pioneers who left water led both aquatic and terrestrial existences. Amphibians had both , and arthropods, whose exoskeletons readily solved the desiccation and structural support problems, evolved to replace their gills, which were probably book gills.
Sample Narrative Essay: Underwater World Adventures | HubPages
But the branch of the that readers might find most interesting led to humans. Humans are in the phylum, and the last common ancestor that founded the Chordata phylum is still a mystery and understandably a source of controversy. Was our ancestor a ? A ? Peter Ward made the case, as have others for a long time, that it was the sea squirt, also called a tunicate, which in its larval stage resembles a fish. The nerve cord in most bilaterally symmetric animals runs below the belly, not above it, and a sea squirt that never grew up may have been our direct ancestor. Adult tunicates are also highly adapted to extracting oxygen from water, even too much so, with only about 10% of today’s available oxygen extracted in tunicate respiration. It may mean that tunicates adapted to low oxygen conditions early on. Ward’s respiration hypothesis, which makes the case that adapting to low oxygen conditions was an evolutionary spur for animals, will repeatedly reappear in this essay, as will . Ward’s hypothesis may be proven wrong or will not have the key influence that he attributes to it, but it also has plenty going for it. The idea that fluctuating oxygen levels impacted animal evolution has been gaining support in recent years, particularly in light of recent reconstructions of oxygen levels in the eon of complex life, called and , which have yielded broadly similar results, but their variances mean that much more work needs to be performed before on the can be done, if it ever can be. Ward’s basic hypotheses is that when oxygen levels are high, ecosystems are diverse and life is an easy proposition; when oxygen levels are low, animals adapted to high oxygen levels go extinct and the survivors are adapted to low oxygen with body plan changes, and their adaptations helped them dominate after the extinctions. The has a pretty wide range of potential error, particularly in the early years, and it also tracked atmospheric carbon dioxide levels. The challenges to the validity of a model based on data with such a wide range of error are understandable. But some broad trends are unmistakable, as it is with other models, some of which are generally declining carbon dioxide levels, some huge oxygen spikes, and the generally relationship between oxygen and carbon dioxide levels, which a geochemist would expect. The high carbon dioxide level during the Cambrian, of at least 4,000 PPM (the "RCO2" in the below graphic is a ratio of the calculated CO2 levels to today's levels), is what scientists think made the times so hot. (Permission: Peter Ward, June 2014)
But plants had to migrate before animals did, as they formed the terrestrial food chain’s base. Along with desiccation issues, plants needed structures to raise them above the ground, roots, a circulatory system, and new means of reproduction. Large temperature swings between day and night also accompanied life on land. Plants developed to conserve moisture, a that piped water from the roots up into the plant and transported nutrients where they were needed, and plant to function. Vascular plants pumped water through their tissues in tubes by tissues and pulling up more new water behind the evaporating water via the “chain” of water’s . The last common ancestor of plants and animals , and sexual reproduction is how nearly all eukaryotes reproduce today, although many ways exist to . The first vascular plants are considered to have attained their height in order to .The in Scotland is the most famous fossil bed that records complex life’s early colonization of land.
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Sample Narrative Essay: Underwater World Adventures
The Cambrian’s global ocean contained far less oxygen than today’s. Being newly and probably inconsistently oxygenated by oceanic currents was only part of the problem. The Cambrian oceans were warmer than today’s oceans, perhaps far warmer, such as 40o C and higher for the . Water’s ability to absorb oxygen declines as it gets warmer. Water heated from 10o C to 40o C will lose 40% of its ability to absorb oxygen. The phenomenon of warmer water absorbing less oxygen contributed to many instances of anoxic waters during the eon of complex life, and particularly in the warmer, earlier periods.
Life under sea water essay - Halogenerators
The Cambrian Explosion’s iconic animal was the . As a child, I read every paleontology text in my elementary school’s library, and I have fond memories of imagining trilobite lives. Was there love among the trilobites? Among the protists? The bacteria? To a scientist, those questions might be unanswerable and even meaningless, but a mystic might pursue them. I will not wax too mystically in this essay (I do it ), but that may well be the big question of life on Earth and . The nature of consciousness and love in the Cambrian, or the lack thereof, as much as it may always be a mystery, does not invalidate life’s arc through the evolutionary process; it only challenges materialism.
Water is life essay – Arterra Bizimodu
Most marine phyla were unable to manage the transition to land and remain aquatic to this day. Arthropods found a way, and scorpions, spiders, and millipedes were early pioneers. The insect and fish comprise the most successful terrestrial animals today, as fish led to all terrestrial vertebrates. Gastropods made it to land, mainly as and , as did , but the rest of aquatic life generally remained water-bound. Also, many animal clades have moved back-and-forth between water and land, usually hugging the shoreline, sometimes in a single organism’s life cycle, which blurred the at times. The first fish to venture past shore seem to have accomplished it in the , and colonizing land via freshwater environments was a prominent developmental path.
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