De façon simplifiée, la sélection naturelle propage les trai… One of the most tragic contributors to this phenomenon is humanity and all that it entails, making the human race arguably the largest of the many different causes of extinction. Once a species starts dwindling in numbers, there's a smaller pool of available mates and often a corresponding lack of genetic diversity. The most serious aspect of loss of biodiversity is the extinction of species. Introduction: Every organism and species has the right to live in a harmonious and safe world, hence nobody has authority to take away others’ lives. The effects of these products include; reduced reproductive capacity, short life span and reduces that ability of the animals to survive the environmental conditions. Once this balance is thrown off, entire ecosystems are put at risk in the oceans. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typic… Plants Extinctions causes and effects on human Nowadays , animal extinction is a broad issue, one that involves the habitats and environments where other species live and interact with one another . Mass fishing in our oceans is leading to a threat for marine life in general, not just fish. - the end of an organism, normally a species. Predation occurs when a species is prey of another species. Humanity has become accustomed to eating meat and fish regularly. It's often impossible for the plants and animals to thrive in new conditions, leading to a population decrease suddenly or overtime. For instance, no one would have thought that prehistoric mammals were better adapted than ​dinosaurs until the K-T extinction changed the playing field. All species have a range and a niche. By most reckonings, since the beginning of life on Earth, a whopping 99.9% of all species have gone extinct. Overfishing is also an increasing risk for the planet. As a result, the raising and slaughtering of these animals is happening too fast to replenish. Because of this, some species are being … While it's unusual for disease alone to wipe out a given species—the groundwork has to be laid first by starvation, loss of habitat, and/or lack of genetic diversity—the introduction of a particularly lethal virus or bacterium at an inopportune moment can wreak havoc. The result is that the animals and plants have to adapt to their new human neighbors, or relocate. Destruction of Habitat – It is currently the biggest cause of current extinctions. As we do so, we are destroying the luscious land that many species call home. A meteor strike on the Yucatan peninsula in Mexico led to the disappearance of dinosaurs millions of years ago. Complete termination of a plant or animal species; 3 CHARACTERISTICS. With all of the science and data on climate change, it's hard to deny that there's something going on here. However, some species that are alive today are in danger of extinction. Extinctions crop up over the millennia with disturbing frequency; even mass extinction events pepper the history of the planet every 65 million years or so. Similarly to the previous point, we aren't doing nearly as much as we should in order to preserve our planet and address the causes of extinction. In fact, some scientists theorize that an extinction "domino effect" is a real possibility in the upcoming years. Depleting water sources. Extinction happens when environmental factors or evolutionary problems cause a species to die out. More: Animals That Are Becoming Extinct. But when it comes to the causes of these phenomena (whether it's a sea-level shift, an asteroid strike, a volcano eruption or a nearby supernova), scientists have a hard time settling on just one cause for one event. When people leave plastic bags, sandwich bags, balloons, and other plastic items on the beach they get swept into the ocean. Let's examine each of these causes of species extinction. Planet Earth teems with life and includes thousands of species of vertebrate animals (mammals, reptiles, fish, and birds); invertebrates (insects, crustaceans, and protozoans); trees, flowers, grasses, and grains; and a bewildering array of bacteria, and algae, plus single-celled organisms—some inhabiting scalding deep-sea thermal vents. The ease of grocery shopping and the accessibility of non-local ingredients creates a carbon footprint that can't be ignored, especially considering the amount that ends up going to waste. Mass fishing in our oceans is leading to a threat for marine life in general, not just fish. As human civilization expands relentlessly into the wild, these natural habitats diminish in scope—and their restricted and dwindling populations are more susceptible to other extinction pressures. The feeding, watering of crops for food, slaughtering, cleaning, and manufacturing processes leave behind a huge CO2 trail. Now is the time to make a change in our day-to-day lives to preserve our planet and all of its inhabitants, ourselves included. They also succumbed to a lack of food and predation by early humans. According to research done by the United Nations. This will lead to starvation to death among other causes. This would mean that certain species are co-dependent for survival, so when one dies off, so do the others. It is believed that man made forced fire have caused extinction of several species in the past. 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