For example, the Bald eagle, peregrine falcon, and brown pelican all became endangered or extinct prior to scientists finding out that the chemical DDT, a chemical used largely in the United States as a pesticide. Farmers use pesticides to keep insects from eating crops. Pesticides
The effect on the land and other animals is another major issue with feral hogs. The main damage they cause to livestock and wildlife is indirect destruction of habitat and agriculture needs. Rooting and trampling for food can cause damage to crops, fields, and other animals feeding and watering needs. For humans it affects their wildlife feeders because they are often damaged or destroyed. In addition to habitat destruction, hogs can destroy forestry plantings and damage trees.
Many of the brown pelicans have died because the sardines have disappeared” (Williams). The food source for the pelican was destroyed so that was another reason that the environment caused the pelican to become endangered. With the main food source gone the pelicans had to find another source to eat off of. They moved on to the murre chicks. “The pelican began to starve around 2010 and began to eat away the murres population” (Williams).
She uses such word to demonstrate the possible reasons for the sudden reducement in the population of the American burying beetles in lines 71-75, “ One reason for the species’ precipitous decline across its historical range, in addition to habitat loss and fragmentation, is possibly connected with the extinction of the passenger pigeon and the greatly reduced number of black-footed ferrets and prairie chickens, all of which provided carrion of ideal size.” As seen in this short excerpt, the importance of other living organisms is essential to the welfare of these beetles for they provide a substantial amount of resources that allow the beetles’ species to prosper, and Goodall is seen to emphasize this idea with her use of the word “extinction” due to the fact that extinction is the absolute eradication of a living organism. Therefore, if there is one minor tweak in the equilibrium of our surrounding food chains, there will be a domino effect onto the affected species which will most definitely make an appalling impact onto many more species down the food chain
There was a horrific outbreak in Europe during the mid-fourteenth century killing about one third of the population. There was also an epidemic in China during the 1330s. During this period, China was a trading nation, which led to the spread of the bubonic plague. Rats on merchant ships that had contracted the disease dispersed it to western Asia and Europe. Eventually the plague was very scattered across the world.
The Black Death (1347-1352) was the Medieval black plague that ravaged Europe and killed a third of its population. It was due to the plague which is caused by a bacterium (Yersinia pestis) transmitted to humans from infected rats by the oriental rat flea (MedicineNet, 2018). There are three main forms of plague in humans: bubonic plague (the commonest form of plague in humans, characterized by fever, delirium, and the formation of buboes), septicemic plague (an especially dangerous form of plague in which the infecting organisms invade the bloodstream), and pneumonic plague (a severe lung infection caused by the bacterium Yersinia pestis). There are a few factors in explaining plague in the Middle Ages: religion, medieval medicine, and modern science, and I will be discussing religion in the Middle Ages as well as
He has took far many lives. So many that we and our fathers and grandfathers couldn’t even count, we may have dealt with those brainless dead easily, but monster like him… The Plague that was brought by that ball of fire couldn’t even affect him, no matter how many times he get bitten by the undead, he couldn’t be affected like how we normal humans turn into a walking corpse when we get bitten. They live while many die because of the Plague. His existence is unnatural, and I must use unnatural means to restore balance.” Joey was determined. “Enough explanation.
I also looked up how many of these animals are left. I looked up why most of them are going are going endangered. I found out that mostly Monkeys/apes/gorillas, rhinos, elephants, big cats, bears, penguins, whales, cold blooded & other ocean animals, canines, birds, and turtles. These are the most endangered groups. I’ll start off with the elephants.
For example, rabbits were introduced in 1859 by English explorers to Australia for hunting at home and feral cats were introduced 1788 into goldmines to control mice, then later also used to keep down the number of rabbits and native rats. Their lack of knowledge has impacted the Australian environment and species diversity greatly. It caused reduced population and increased pressure from uncontrolled predator and competition for food, water and shelter for native animal and plant species and degradation of native habitats, soil and waterways. Feral animals typically have few natural predators or fatal diseases and some have high reproductive rates. Their populations have not naturally diminished, so they can multiply rapidly if conditions are favourable.