AUSTRALIAN MARINE LIFE The Plants and Animals of Temperate Waters

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.

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Oceans cover almost 3/4 of the Earth's surface and contain roughly 97% of the Earth's water supply

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Humans unique in many ways, although a healthy behavior amongst scientists is stating that humanity is “just another species.” There is even an acronym used in scientific circles to emphasize our mundane status, which is no better or worse than any other organism. Humans are different, but using it to justify our status bestride Earth is egocentric, and the humility of “just another species” scientists is badly needed in our world today.

The Law of Accelerating Returns | KurzweilAI

Some further examples of the complexity and debate follow. About when is supposed to have appeared, a fossil formed in a similar location, which was at least contemporary with . Where it fits in the human family tree is unknown at this time, but today it is called . This is perhaps a descendant of , which (who led the team that discovered it) argued is a member of a new genus. Because there is in the modern human genome, under the , have been placed within by some anthropologists. Some small fossils in , but are now designated as a subspecies. The have been widely considered as , but they have features that suggest that they may have been habilines or even australopithecines, which would dramatically change the current view on the first migrations past Africa. They may well have been Oldowan culture australopiths that migrated from Africa about when did, and they also controlled fire. Similarly, a relative of that precedes is called , but may also be a subspecies. The confusion and debate is partly because the differences between those “species” are minor and more on the order of regional variation than any radical change. They perhaps could have all interbred with each other. Other than the “hobbits,” there are no great anatomical changes and few noticeable cultural ones among the various specimens for more than a million years of evolution, so I refer to them all as , as do many anthropologists, particularly when writing for the lay audience. For those who want to explore the relatively fine distinctions, the material is readily available for study and can be another useful example of the process of science, if one of the more heated illustrations.

"The Light Between Oceans" director Derek Cianfrance's wife writes scathing essay about ..
Are oceans in danger

644 Good Persuasive Topics [Speech or Essay]

In their dance around an , electrons exist in “.” The most stable electron configuration exists when the electrons fill the shells and each electron is paired with another, and each electron spins in the opposite direction of its partner. The classical view of an electron had an electron orbiting the nucleus much in the same way that Earth orbits the Sun, but quantum theory presents a different picture, in which an electron is a . Even then, a hydrogen electron’s orbit does not look much different from the classical image, and the classical view largely suffices for this essay in presenting the energetic aspects of the electrons’ properties.

Oceans in danger essay

Energy and the Human Journey: Where We Have Been; …

During the Cambrian Explosion, an ecosystem developed in which life on the sea floor, surface, and water column all interacted for the first time. All but one of were energy dynamics, as the environment provided either too much or too little energy, and the nutrient hypothesis () will be revisited numerous times in this essay. A lack of nutrients, mineral and otherwise, always meant that the energy-driven dynamics that delivered the nutrients were curtailed. If enough energy is properly applied, all nutrients can be abundant.

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Why the Future Doesn't Need Us | WIRED

Before the rise of humanity and industrial agriculture, the interplay of life, climate, and land masses created the that fed oceanic ecosystems. However, during the Cambrian Explosion the land was largely barren, as life had yet to significantly invade land. Also, have always been key hosts for oceanic ecosystems, as sunlight could reach the seafloor and nutrients were closer to the surface. When supercontinents broke apart or formed as the tectonic plates danced across Earth’s crust, shallow seas were often created, which were usually quite life-friendly. Those ancient shallow seas and swampy continental margins have great importance to today’s humanity, as our fossil fuels were usually created there. Earth’s were created in swampy floodplain conditions, usually near coasts, and the oil deposits were created by and that . The and its predecessors (, ) had a half-billion-year history that began in the Ediacaran, and the Tethys finally disappeared less than 20 mya. The shallow margins of those tropical oceans, and the anoxic events that dotted the eon of complex life, formed most of today’s oil deposits, and . Numerous shallow tropical seas .