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An essay about a life changing experience

For several million years, life in the Eocene was halcyonic, and at 50 mya, the state had prevailed ever since the 250 mya. But just as , Earth began cooling off. The ultimate reason was atmospheric carbon dioxide levels that had been steadily declining for tens of millions of years. The intense volcanism of the previous 200 million years waned and the inexorably sequestered carbon into Earth’s crust and mantle. While falling carbon dioxide levels were the ultimate cause, the first proximate cause was probably the isolation of Antarctica at the South Pole and changes in global ocean currents. During the early Eocene, the global ocean floor’s water temperature was about 13oC (55oF), warm enough to swim in, which was a far cry from today’s near-freezing and below-freezing temperatures. The North Sea was warm as bathwater. Radical , warming the ocean floor, and . Whatever the causes were, the oceans were warm from top to bottom, from pole to pole. But between 50 to 45 mya, Australia made its final split from Antarctica and moved northward, India began crashing into Asia and cut off the Tethys Ocean and the global tropical circulation, and South America also moved northward, away from Antarctica. Although the debate is still fierce over the cooling’s exact causes, the evidence (much is from ) is that the oceans cooled off over the next 12 million years, very consistently, although a brief small reversal transpired at about 40 mya. By 37-38 mya, the 200-million-year-plus Greenhouse Earth phase ended and the transition to today’s ice age was underway. In the late Eocene, as the trend toward conditions began, such as the .

A life experiences sample essay

In the oceans, the Carboniferous is called the Golden Age of Sharks, and ray-finned fish arose to a ubiquity that they have yet to fully relinquish. Ray-finned fish probably prevailed because of their high energy efficiency. Their skeletons and scales were lighter than those of armored and lobe-finned fish, and their increasingly sophisticated and lightweight fins, their efficient tailfin method of propulsion, changes in their skulls, jaws, and new ways to use their lightweight and versatile equipment accompanied and probably led to the rise and subsequent success of ray-finned fish in the Carboniferous and afterward. , which are amoebic protists, rose to prominence for the first time in the Carboniferous. Reefs began to recover, although they did not recover to pre-Devonian conditions; those vast Devonian reefs have not been seen again. did not appear until the . Trilobites steadily declined and nautiloids familiar today, and straight shells became rare. The first , which were ancestral to squids and octopi, first appeared in the early Carboniferous, but some Devonian specimens might qualify. Ammonoids flourished once again, after barely surviving the Devonian Extinction. This essay is only focusing on certain prominent clades, and there are many and . The early Carboniferous, for example, is called the Golden Age of , which are a kind of , which is a phylum that includes starfish. The crinoids had their golden age when the fish that fed on them disappeared in the end-Devonian extinction. Earth’s ecosystems are vastly richer entities than this essay, or essay, can depict.

An essay about a life changing ..

I received a text that changed my life forever; my best friend since middle school just told me she might be pregnant....

So far, this essay has dealt lightly with regional differences and largely confined the discussion to polar, temperate, and tropical conditions in the seas, and rainforest versus dryer conditions on land. While existed, barriers to species diffusion on land were relatively modest, hence dominance. But at the Triassic’s end, and continental differences in plants and animals often became significant in later times. Although the formation of Pangaea had profound impacts, because land life was relatively young, the differences and resultant changes due to the removal of oceanic barriers were less spectacular than would happen in the distant future, such as when .

Although the overwhelming devastation of the Permian extinction seemed to play no favorites and whatever survived was the luck of the draw, recent research has demonstrated that even with such a catastrophe, certain life forms were more resilient than others, related to biological “buffers” in their life processes. In marine environments, the warming, anoxia, and acidification would have wiped out species vulnerable to them, and corals were and still are particularly susceptible to those changes. Those conditions wiped out the corals in the Permian extinction, and they are the first ecosystems being devastated today, with similar conditions of . Whether it was the ability to move to safer environs or the ability to buffer chemical changes, the more organisms had a better survival rate than others.

A Life Changing Event Essay -- Personal Experience

Your Life Changing Event --An article on Your Life, Your …

Those people trying out all the are to be commended, but they do not have a chance in today’s world. A new approach is needed that is aligned with the kind of world that it can help manifest. The effort needs to aim high. Concepts such as and have come from the Internet culture, and are steps in the right direction. Even high-tech potentates such as Bill Gates . The Internet is a precursor to the kind of communication system that will be enjoyed in the of the human journey, and I plan to use it for this new approach of manifesting FE. When love and abundance reign instead of fear and scarcity, a creator’s orientation toward life will probably replace the victim’s orientation. Making that future at least partly imaginable , and time will tell if it makes a significant impact. As the great Bucky Fuller said, . Which one will we choose?

, who had a scientific career at General Electric, also believed that the energy industry would welcome his solid-state FE device. He , expecting a tickertape parade. The opposite happened as shadowy interests destroyed his business deals, in a situation . Sparky did not take the hint and kept trying, which led to death threats. After their final threats, Sparky fled into hiding, where , and Sparky died the next week of a “heart attack.” Dying that way who played near Sparky’s level, and , and the event shortened his life. Dennis, Sparky, and many others like them lost their naïveté the hard way, but the field has been filled with newcomers who deny the reality of organized suppression as they charge forward with visions of riches and fame. It is perhaps the most common level of awareness where FE newcomers will be found. Most never develop anything worth suppressing so will never know any differently, and will enter and leave the field with that beginner's level of awareness intact. However, with enough people trying and either living to tell the tale, or others chronicling their dire fates, which , and the Internet spreading information like never before, few FE newcomers have much excuse for being unaware of the fates of their professional ancestors. The Internet is like the , or the , ratcheted up by a few orders of magnitude, and my website, this essay, and my comprise my attempt to take advantage of its potential.

Life changing events essay - Ryder Exchange
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the essays briefly write about life changing event to adulthood

Perhaps a few hundred million years after the first mitochondrion appeared, as the oceanic oxygen content, at least on the surface, increased as a result of oxygenic photosynthesis, those complex cells learned to use oxygen instead of hydrogen. It is difficult to overstate the importance of learning to use oxygen in respiration, called . Before the appearance of aerobic respiration, life generated energy via and . Because oxygen , aerobic respiration generates, on average, about per cycle as fermentation and anaerobic respiration do (although some types of anaerobic respiration can get ). The suite of complex life on Earth today would not have been possible without the energy provided by oxygenic respiration. At minimum, nothing could have flown, and any animal life that might have evolved would have never left the oceans because the atmosphere would not have been breathable. With the advent of aerobic respiration, became possible, as it is several times as efficient as anaerobic respiration and fermentation (about 40% as compared to less than 10%). Today’s food chains of several levels would be constrained to about two in the absence of oxygen. Some scientists have and oxygen and respiration in eukaryote evolution. is controversial.

How to write an essay about a life changing event - …

Around the end of that , another unique event transpired with enormous portent for life’s journey on Earth: one microbe enveloped another, and both lived. Today's prevailing hypothesis is that an archaean enveloped a bacterium, either by predation or colonization, and they entered into a . Today’s leading hypothesis, , is that the archaean consumed hydrogen and the bacterium produced hydrogen, which formed the basis for their symbiosis. That unique event transpired around two bya and led to complex life on Earth. That enveloped bacterium was the parent of all on Earth today, which are the primary energy-generation centers in all animals. About 10% of the human body’s weight is mitochondria. If not for the red of and the in skin, humans would look purple, which is the mitochondria’s color. That purple color is probably because the original enveloped bacterium that led to the first mitochondrion was .

Essay on Life Changing Events - 898 Words

The Moon in relation to the Sun and made Earth's seasons vary within a relatively narrow range. Without the Moon, Earth could have up to 90o changes in its axis of rotation instead of the 22o-to-24.5o variation of the past several million years. If that had happened, although life may have survived, Earth’s climate would have been extremely chaotic, with part of the planet going into perpetual day while another went into perpetual night, and other wild variations. Earth would have had mass-extinction effects on those portions, and the rest of the biosphere would have been extremely challenged to survive. Complex life on Earth would little resemble today’s (if it had appeared and survived at all), if Earth’s axis tilted chaotically and severely. The primary effect of Earth’s stable tilt is the planet’s entire surface receiving relatively uniform and predictable energy levels.

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