They need to be able to find food or they will starve. After all global warming is also helping to kill hummingbirds, but there are many things that are killing off this species of birds. On the other hand hummingbirds have a very large range of
Evolution, according to Darwin is a “slow and gradual, and endless” process. It also states that organisms are more prone to adapt in a specific environment and therefore reproduce and survive. What causes species to adapt and change in different environments is the theory of natural selection. This theory is supported by his small collection of fossils, observations and understating of breeding patterns. There are contradicting views to this theory which I will explore further in this essay, while analysing 5 texts.
An influence within the biological approach is genetics, characteristics that are not suited to a species’ environment will die out as it struggles to survive, and with time will evolve over generations so that only adaptive characteristics remain in future offspring. Genes are the genetic information carried by DNA in chromosomes, found within a cell’s nucleus; they are passed on through generations of a species if individuals survive and successfully reproduce. In line with Darwin’s theory of evolution, it might also follow that genes form a basis of behaviour, as both behaviour and genes appear to be heritable. An example might be aggressive behaviour, in light of obvious survival benefits such as warding off predators and competing for resources. We inherit a faulty gene which predisposes us to develop a particular disorder.
When a species disappears, it leads to the death of other ones from small scale to large scale, from local to all ecosystems. At that time, the ecosystem is out of the balance. People will suffer many adverse consequences, such as climate changes, lack of food and water (Everything relies, n.d.). Moreover, when people protect animals, the animals will become diversity making the ecological stability. By way of illustration, , although the Komodo dragon is one of the animals in the danger of extinction because only a few thousand of these animals is alive (Kalman.B, n.d.) , the zoo in Singapore has successfully bred this endangered animal (Komodo dragon, 2009).
“When we try to pick out anything by itself, we find it hitched to everything else in the Universe.” (Muir, 1911) According to the Oxford dictionary, biodiversity is defined as “the variety of plant and animal life in the world or in a particular habitat, a high level of which is usually considered to be important and desirable.” (Oxford Dictionaries, 2015) Due to the ignorance of mankind, and our yearning for progress and development, the environment, and its many inhabitants all of the world, have been gravely affected. In some cases, so much so, that for certain species, it ended in extinction. A well known example of this would be the Dodo bird. This flightless bird was native to the island of Mauritius, first sighted there in the 15th century. However, they became excessively hunted by man, once discovered, and preyed by the animals brought onto the island by humans.
Powerful technology such as genetic engineering arouses both hope and fear in humanity. Genetic engineering is the modification of genetic material by taking genes from one species and putting it into another. Genetic engineering was first introduced in animals and plants with the intention of enhancing humanity by creating improved food with medicinal properties, known as genetically modified (GM) food or genetically modified organism (GMO). However, scientists are now taking a great leap to create GM babies, known as Human Genetic Modification (HGM). Concerns on eugenics and treatment of human embryos as a property sparked all around the world, fearing that HGM may have the ability to alter human evolution, opening Pandora’s Box.
Nowadays debris is an integral part of humanity life. Mankind thinks about how to make the product easier and cheaper to use, but nobody cares what happens with waste after it was used. We contaminate the environment with every decade increasingly: muddied air and water, global warming are an output of human life. The worst thing is that from such attitude other living beings are dying. Millions of animals and birds cannot withstand such environmental changes; their populations become smaller and, eventually, disappear altogether from the face of the earth.
These, the largest living land mammals, are at risk of being terminated by humans. Elephants are a keystone species; meaning if they became extinct, extreme consequences would come to all wildlife around them. These gentle giants are quickly being wiped out by poaching, human-wildlife conflict, and abuse. The underlying issue within all of this is the general lack of respect for elephant life. Action needs to be taken to prevent these incredibly intelligent and emotional creatures from disappearing.
Threats to Biodiversity Extinction is a natural part of life on Earth. Over the history of the planet most of the species that ever existed, evolved and then gradually went extinct. Species go extinct because of natural shifts in the environment that take place over long periods of time, such as ice ages. Today, species are going extinct at an accelerated and dangerous rate, because of non-natural environmental changes caused by human activities. Some of the activities have direct effects on species and ecosystems, such as: Habitat loss/ degradation Over exploitation (such as overfishing) Spread of Non-native Species/ Diseases Some human activities have indirect but wide-reaching effects on biodiversity,
We all know that the world ecosystem is a delicate balance, we also know that everything would fall apart if something as major as all animal kind went extinct. Cause it won’t just affect the animal chain but also affect the human race. Some plant and insect would be over populate and eventually human kind would be in more trouble other than animal extinct. Example animals are used by some plants to disperse seeds, some animals can eat other plant-eating animals, bees and other insects help pollinate flowers, earthworms aerate the soil so that the roots of plants can better obtain oxygen. One of the example is the remora