Scientists estimate that 150-200 living species become extinct every 24 hours. The average human might not consider the significance of these dying species, but that may prove to be an issue in the near future. Living species, as Environmental Specialist Michael Marshall, states, provide “ecosystem services”. Some of these services are obvious, such as the meat that humans consume or the oxygen used to breathe. Imagine the world without any meat, and the widespread food shortages that would result. This fiction could become a reality if actions are not taken to prevent extinction. Because of the threats to resources that are required to sustain ourselves as humans, we must take steps towards conservation of species who are approaching extinction. The cause of extinction is a question that contains various answers. Endangered Species Director Noah Greenwald notes in his article, “Unlike past mass extinctions, caused by events like asteroid strikes, volcanic eruptions, and natural climate shifts, the current crisis is almost entirely caused by us — humans”. In addition, Victoria Steele articles relate to Greenwald because she notes in her article, “Many animals like the cod, the dodo and the American passenger pigeon used to be plentiful. But now two of these are extinct and the cod is very endangered. This can only be explained by human actions. Humans would use or eat these animals without being worried about conserving them.”. Both articles illustrate the idea that
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The number of wild animals on Earth has halved in the past 40 years . Creatures across the land, rivers, and the seas are destroyed as humans killed them for food in unsuitable numbers, while polluting or destroying their habitats.
Conservation of our biodiversity not only demonstrates foresight, it protects the natural resources so vital to our own continued existence. The value of any single species to an ecosystem is immeasurable; the environment will not endure without its species, despite size or niche. These animals are not dispensable. And, they are apt to face extinction in the not too distant future, unless a resolve for their preservation is insisted by the public and enforced by governments internationally.
Long-term survival of a species depends on its ability to adapt to changing environmental conditions (Murphy, 1994). Genetic diversity within a species, which has taken 3.5 billion years to evolve, makes adaptations to these changing environments possible. Unfortunately, the rate of extinction of genetically diverse organisms is rapidly increasing, thus reducing this needed biodiversity, largely due to the human impacts of development and expansion. What was an average of one extinction per year before is now one extinction per hour and extinct species numbers are expected to reach approximately one million by the year 2000 (WWW site, Bio 65). As a result governmental and societal action must
However, the author of “Earth has lost half of its wildlife in the past 40 years,” states, “We have lost half of the animal population and knowing this is driven by human consumption, this is clearly a call to arms and we must act now… The earth must be protected from development and deforestation, while food and energy have to be produced sustainably” (Damian Carrington). The population of animals has decreased for many reasons that all point back to favoring industries rather
There are several hypotheses that are used to explain the causes of mass extinctions. Climate change, the warming or cooling of global environments over a short period of time, can lead to other occurrences. Shifts in climate can cause extinction by
Summarize: The result of one species extinction could potentially be fatal to the environment. In the animal kingdom, there is a food chain. Keystone animals, are the key ingredient to the food chain. When that keystone animals goes extinct, it sets off a chain reaction on the other animal’s food source. This causes one species to flourish and another to dwindle. The environment needs a healthy checks and balance system to keep each animal population under control (Stuart, 1990 ). Humans can cause the keystone animal to become extinct and therefore, responsible for rise and decline of other species, ultimately, throwing the food chain off balance.
Machovina, Brian, Kenneth J. Feeley, and William J. Ripple. "Biodiversity Conservation: The Key Is Reducing Meat Consumption." Science of The Total Environment 536 (2015): 419-31. Elsevier, 2015. Web. 20 July 2016.
Throughout evolution, many species have come and gone. What causes a species to become extinct and what can the human race due to prevent it? Many species’ population decline has been linked to human causation. An endangered species is defined as “plant and animal species that are at risk for extinction” (Funk). Endangered species can be placed into two more specific categorizes. Threatened species are species at risk for endangerment, while endangered species are at risk for extinction. Despite the fact that many people believe extinction is a major issue, the Funk and Wagnall’s New World Encyclopedia states that, “extinction is actually a normal process in the course of evolution” (Funk). Over time, numerous species have become extinct, usually as a result of climate changes, inability to adapt, or predation. Another major cause of endangerment is the human population. Pollution, global warming, and hunting is all causing a decline in the population of numerous species. While the encyclopedia is entirely fact based, many authors have worked to sensitize people to threatened species. For example, renowned author Sharon Begley, has written numerous articles to inform people of the importance of many species that are often overlooked.
Several man-made threats have accelerated extinction rates across the globe, such as global warming, pollution, and introduced species. Current extinction rates
Bill Freedmen, author of “Endangered Species—Human Causes Of Extinction and Endangerment” notes, “scientists approximate that present extinction rates are 1,000 to 10,000 times higher than the average natural extinction rate.” These distressing numbers should be acted upon to save the endangered species and avoid the catastrophic change to this planet if these species were to become extinct. In order to produce change, people need to recognize that habitat loss, climate change, and poaching are all factors in why our animal species are going extinct.
It’s clear that a great extinction is coming from the evidence of the destruction of other species around us. The choices made by the human race have too often negatively affected the surrounding species. Tracy Wilson, the site director for HowStuffWorks.com, in an article for Animal Planet, states that
Habitat destruction, deforestation, ozone depletion, global warming, and poaching. These actions and ecological happenings are creating a world where animals are going extinct at rapid rates. Our world is on the brink of what scientists believe is the sixth mass extinction. Unlike the five previous mass extinction, the latest one killing a majority of the dinosaurs, the main causes for this current extinction are anthropogenic reasons, not natural events.
There are many species that are on the verge of extinction. Earth's animals are on the brink of a sixth mass extinction, where massive amounts of plants and animals die off. The main reason why animals are becoming endangered or are on the verge of endangerment is because of human beings. Humans are causing the extinctions by deforestation, poaching, and contributing to pollution.
The health of the earth degrades with the destructive activity of human beings. A recent study by a group of scientists looked at twenty four different services that the earth’s ecosystems provide for humans, ecosystem services, and found that fifteen of them are in need of desperate help (Gazette 31 March 2005). These services are vital to the survival of both human and nonhuman life and include filtering water and providing nutrient rich soils and ocean waters. Many of the members of these various ecosystems are also decreasing in numbers. In a British survey of bird populations found that in the 200 birds of Britain tracked there was about a 54% population decrease between the 1968-1971 tacking period and the 1988-1991 tacking period. In two other surveys of 254 native plant species from the same area there was a decrease of about 28% during the past 40 years. Humans are pushing the sixth mass extinction (Gazette March 19, 2004).