Extinction of Wildlife Species

Extinction of Wildlife Species

Extinction, in biology, the dying out or termination of a species. Extinction occurs when species are diminished because of environmental forces (habitat fragmentation, global change, overexploitation of species for human use) or because of evolutionary changes in their members (genetic inbreeding, poor reproduction, decline in population numbers). Ecologists estimate that the present-day extinction rate is 1,000 to 10,000 times the background extinction rate (between one and five species per year). This high extinction rate is largely due to the exponential growth in human numbers: from about 1 billion in 1850, the world’s population reached 2 billion in 1930 and more than 6 billion in 2000, and it is expected to reach about 10 billion by 2050. Almost one in four mammal species, including four of the six remaining species of great apes, and one in eight bird species were considered at significant risk of extinction at the start of the 21st century.

There are three major causes of extinction: habitat loss, pollution, population growth. Habitat loss is the greatest factor in wildlife extinction and habitat loss is caused by deforestation wherein if deforestation occurs many species lose their natural homes and food supplies and it happens so rapidly that they do not have time to adapt and species are lost. Pollution can also the reason for the extinction of wildlife species because when acidic air pollutants combine with water droplets in clouds, the water becomes acidic that when those droplets fall to the ground, the acid rain can damage the environment that kills tress, harm animals, fish and other wildlife. Next is the population growth, if human population continues to grow it results to overconsumption of trees, fruits, and land and marine animals. These factors will all lead to extinction of our species.

When we lose the animals through extinction, we lose biodiversity. Animal extinction is a threat to the human life since there are a lot of things that the animals provide to the human beings such as food, clothing, and others. Furthermore, trees and plants are equally important since they provide fuel wood, lumber, paper, and medicine, thus, their extinction is a great lost to humans. These plants and animals of the earth are also important because of the recreational pleasure they provide us with. More importantly, Eco-tourism, generates at least $500 billion per year worldwide which is a huge help for the economic growth of every country.
Each of us has a vital role in preserving our species even in a little way we can. First is to change our lifestyles. We can do this by just simply paying attention to the products we use, not buying products made from endangered species, buying local food, saving energy, and recycling and buying sustainable products. Second is getting involved by giving time to nature through joining some organizations with advocacy of saving our nature. Lastly, educating others on how we can preserve our species through social media.

Prepared by:

Graciela Morales

G12 Gratitude


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