About 66 million years ago an asteroid hit the Earth and killed the species of dinosaurs. The Chicxulub asteroid released a massive cloud of smoke into the sky. This smoke caused high levels of sulfuric acid particles to disperse into the atmosphere. These particles consisted of black carbon, which absorbs light more than the orthodox carbon molecule which, consequently,caused a complete darkness.This asteroid did not kill all of the dinosaurs. Animals that could adapt to the freezing temperatures survived. Some of these animals included: Crocodilians, birds, small mammals, and most ocean creatures because of habitats that protected them from the chilling temperatures. Some of the theories about what really caused the dinosaurs extinction vary.
One theory suggests that a volcanic eruption of some sort would have added a significant amount of carbon dioxide to the atmosphere. The increase of carbon dioxide in the air would have resulted in higher
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The rainfall decreased by about 80% and the sunlight to decrease about 85%. Both of these factors would have impeded on photosynthesis. Another effect the asteroid had on photosynthesis is temperature. The soot from the asteroid absorbed light more than the orthodox carbon molecule. This caused the temperatures to drop substantially. The plants went from having a substantial amount of sunlight, rainfall, temperature, to having a major decrease in all of the factors that allow for a plant to thrive. The decrease did not allow for the plants to thrive. Consequently, the plants died off and this caused a food shortage for the dinosaurs. The dinosaurs would have also died, not only from starvation, but also from hypothermia and from acid
The manner in which Poe addresses the topic of class differences and the struggle for power with his fictional characters resounds of his own struggles in his personal life. However, unlike in Hop Frog and the Masque of the Red Death, he was never himself able to emerge wholly victorious over his adversaries, including the publishing industry. In addition, Poe’s characters appear to hint that while wealth may be the source of power for many, the correct use of information itself is the surest path to the acquisition of power.
...r optimum temperatures, hot climate caused the dinosaurs to heat up beyond their optimum. However, the heat didn’t kill them, but sterilized the males, because their testes functioned at certain temperatures. Gould argues that this theory is untestable, and the experiments with the influence of extreme temperatures on modern alligators do not necessarily explain the extinction of dinosaurs. Furthermore, many questions are not answered because of the absence of evidence. Gould states that this theory is another example of bad science.
At a time, scientists believed all dinosaurs were cold-blooded. However, with a recent discovery of a dinosaur found with a fossilized heart in the northern part of South Dakota in 1993, many paleontologists are starting to think that there were some dinosaurs that were warm blooded.
“we thought we had them under control, but we were wrong, and now they want revenge”. The greed of the scientists was too high that it blinded them and didn’t let them see what could result from such an experience. The Scientists wanted to bring back what god got rid of million years ago, and they wanted to beat god’s powers with their technology. They were successful at first which increased their ago, but then when the dinosaurs got out of control, the scientists realized that they had messed up trying to beat god. This reflects and supports the theme of the movie which is, the hubris of men using technology to try to play god will lead to their downfall, and indeed it did as we saw with the
The levels of carbon dioxide in the atmosphere were 15 times higher than they are today and this was due to the volcanic activity, which released enormous amount of carbon dioxide gas into the atmosphere. The flooding of continents and the lack of plants on land also contributed to the heightened levels. These conditions created a greenhouse effect so tempera...
We use dinosaurs to represent the changes in nature that have occurred throughout time. Studies found that although the “oldest rock did not show evidence of life, the progression of plant and animal life that changed in recognizable intervals, from ancient life, age of reptiles to the age of mammals” (Dino Nature Metaphor, slide 6), measured the age of the earth. When we think of dinosaurs in relation to nature, we think of that very powerful force that controls the cycle of life. Nature was able to yield such magnificent ferocious creatures that walked the earth and then take them back when they served nature’s purpose. Dinosaurs fit perfectly in nature’s constant
The sole reason for the change in atmospheric temperature can be attributed to Carbon Dioxide emissions. Ocean acidification has occurred due to chemical changes in oceans. Highly concentrated carbonic acid is the product formed due to CO2 entering into the oceans and reacting with water.
“...99.9 per cent of all [species] that have ever existed are now extinct.” (Benton 1) After one hundred and sixty million years of domination, the reign of the dinosaurs ended in fire and ice. Sixty five million years ago, the largest volcanoes in the history of the Earth erupted across what is now India, effectively annihilating the dinosaurs by spewing out noxious gas and ash, that effectively blocked out the sun killing off most vegetation and breaking the food chain, leaving the dinosaurs to starve. Compared to other groups of animals the dinosaurs were the most vulnerable to such a climatic event and the result was the end of the dinosaurs’ glorious evolutionary history.
The Extinction of Dinosaurs How did the dinosaurs become extinct? This is a question that has stumped scientists ever since dinosaur fossils were first discovered. There are many theories as to how the dinosaurs became extinct. This page presents some of the most popular theories. Keep in mind that there is no absolutely proven theory.
of species due to a variety of causes. Included is out competition, depletion of resources
The Jurassic period is known as one of the most interesting periods of time in earth’s history, mainly for the awe-inspiring creatures many of which have gone extinct, the most remarkable being the dinosaurs. Life in the ocean during this time was also extremely diversified and amazing for the creatures it beheld. The Jurassic occurred from 199.6 to 145.5 million years ago, following the Triassic Period and preceding the Cretaceous Period within the Mesozoic Era. The supercontinent of Pangea began to drift apart during this time. Right before the Jurassic period began, a major extinction event occurred wiping out much of the life on earth. The events that unfolded afterwards gave life to a new planet.
The most popular theory of dinosaur extinction, the asteroid theory, says that dinosaurs died out because of a single, giant asteroid. They say that the asteroid that struck the earth near the Gulf of Mexico went 43,000 mph and spanned six miles wide (Erdman). When it hit the Earth the asteroid it left an enormous crater that measured 24 miles deep and 125 miles wide (Erdman). Just the impact of the asteroid destroyed the forests and landscape of the majority of North America due to its massive shock wave (Erdman). Many species went extinct when the asteroid hit, these species include dinosaurs, ammonites (certain ocean dwelling creatures), pterosaurs, and some plant groups dinosaurs, ammonites (mollusks related to the octopus and the chambered nautilus), pterosaurs, and certain plant groups. Although devastating, the asteroid did not wipe out all of the animals on Earth, it didn’t exterminate fish, frogs, turtles, birds, mammals and croco...
Volcanic activity also causes the release of certain elements that may block the sun and also contribute to the increase of greenhouse gases in the atmosphere. The most destructive human contribution to climate change is fossil fuel combustion, which results in the release of carbon dioxide and other greenhouse gases into the atmosphere. Increased carbon dioxide, methane, nitrous oxide and halocarbon levels in the atmosphere cause an imbalance in the earth’s energy. This is because the gases alter solar radiation and thermal radiation, which regulate the earth’s energy.
Scientists think this was thanks to the combination of a super-volcano erupting and the ice-age.
This is based upon the sunlight and volcano eruptions which plays an extreme factor. "Most often, global climate has changed because of variations from sunlight. Tiny wobbles in Earth’s orbit altered when and where sunlight falls on Earth’s surface. Variations in the Sun itself have alternately increased and decreased the amount of solar energy reaching Earth. Volcanic eruptions have generated particles that reflect sunlight, brightening the planet and cooling the climate. Volcanic activity has also, in the deep past, increased greenhouse gases over millions of years, contributing to episodes of global warming." (Global Warming, web.) However, I firmly believe that climate change is not only the result of natural causes alone. I think it is man-made and the major factors are from CO2, factories, and power plants burning coal/ oil, natural gas.