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Living conditions of koalas
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Adaptations
An adaptation is the characteristic of an organism that makes it likely to survive. There are three types of adaptations: structural, physiological, and behavioural. Structural adaptations are physical features, physiological adaptations are related to the internal body functions, while behavioural adaptations refer to how organisms respond to stimuli (Beavis 2014). This paper will discuss some adaptations that help koalas and eucalyptus trees survive in their environments.
Part One: Koala
(Pet Setter n.d.)
Koalas, an Australian native, have the scientific name, ‘Phascolarctos cinereus’, meaning 'ash grey pouched bear.' They are sometimes called koala bears due to their resemblance to bears. However, they are not related to each other. Instead, koalas are related to other marsupials, such as kangaroos and wombats. Being a marsupial means that the females have a pouch for newborns. The Australian Koala Foundation estimated that less than 80000 koalas are left in Australia (Australian Koala Foundation n.d.).
Koalas are arboreal mammals, meaning that they live in trees. They live in eucalyptus trees and feed on their leaves, which are poisonous to most animals. A koala’s home is decided by two main factors: the presence of other koalas and eucalyptus trees. They can eat other tree leaves, but that usually occurs only when eucalyptus leaves are absent (Crawford n.d.).
Wild koalas are found mainly along Australian East Coast and South Australia as shown on the map.
(Australian Koala Foundation n.d.)
Structural Adaptations
Koalas have pear shaped bodies that help in balancing and positioning themselves in tree forks. They also have reduced tails and long limbs that help in ...
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...p://www.anbg.gov.au/cpbr/cd-keys/Euclid/sample/html/learn.htm#evolution>
Crawford, C n.d., The Physiology of Koalas, Davidson College, viewed 22 May 2014,
Glasgow, E 2011, Eucalyptus dives, University of Wisconsin, viewed 23 May 2014,
PBS n.d., Eucalyptus Tree, PBS, viewed 24 May 2014,
Pet Setter n.d., Koala Pet Setter, Pet Setter, viewed 22 May 2014,
Sheppard, H 2007, Eucalypts, Australian Government, viewed 23 May 2014,
The Koala 2009, Koalas, The Koala, viewed 23 May 2014,
Unlike the maned wolf and coyote, Darwin’s fox lives in the temperate forests, especially near Chile, or any other place in South America. Some species live on Nahuelbuta National Park or in Chiloe Island. Alike the coyote and maned wolf, Darwin’s fox is omnivorous and a secondary consumer. It eats mammals, invertebrates, reptiles and birds as well as fruits. Because of it’s small size, Darwin’s fox is easier to get caught by predators such as wild and domesticated dogs as well as pumas.
Koalas, Phascolarctos cinereus, are classified in the Order Diprodontia of Marsupiala. The major distinguishing characteristics of Diprodontia are syndactyl hind feet, forcipate forepaws, and one functional pair of incisors in the lower jaw (Martin and Handasyde, 1999). Koalas live in the eastern portion of Australia, from coastal and inland Queensland, through New South Wales, and on to Victoria. Among koalas, the size of the animal increases southward. Male koalas in Victoria weigh from 9.5 to 14.9 kilograms, while in Queensland, they weigh 4.2 to 9.1 kilograms. This trend also occurs in the female populations. In Victoria, females can weigh 7 to 11 kilograms and in Queensland can weigh 4.1 to 7.3 kilograms (Martin and Handasyde, 1999).
Short-tailed opossums are one of only a few marsupials that do not have a pouch. Just like other marsupials however, their babies are born premature and the babies then attach themselves to the nipple where they stay from between 3 to 4 weeks. The nipple of the mother swells in the babies mouth, so if the baby falls off, it is unlikely that it would be able to reattach itself.
They are so well adapted to arboreal life that they cannot place their feet on
Now I shall give a bit of a quick history lesson. The land of Australia had two types of people living there before the European settlers came to the country the Aboriginal and the Torres Strait Islanders and in 1688 a man named William Dampier was the first British man to explore Australia (Austrailian Department of Foreign Affairs and Trade). This is similar to how America had Native A...
to discuss changes in habitat and environmental variability, nature of diet and dietary changes, and nature of and reliance on fallback foods of extinct great apes; and
According to the New World Encyclopedia, “koalas spend seventy-five percent of their day sleeping which accumulates up to nineteen hours of sleep a day.” In the remaining five hours they use three of them for eating, this can occur at any given time but they prefer to eat mostly during the night. They have a very strict preference when it comes to find, for instance they strictly eat eucalyptus plants. Occasionally they will non eucalyptus species such as blue gum, and manna gum. Koalas are found only in eucalyptus forests of eastern Australia:
There is a diversity of tribes that the human society was once uninformed of its existence. Until the 1970, mankind was unaware of the Korowai society existence. The Korowai also known as Kolufu are from the southwestern part of the western part of New Guinea. The Korowai tribe follows a common language, economic system, and an exceptional lifestyle. They practice rituals and have incredible architectural knowledge. In the verge of extinction the Korowai tribe continues to practice their unique culture and traditional rituals.
According to their website, the Komodo dragon has a population of about 3,000 to 6,000 on the islands of Komodo, Gila Motang, Rinca, and Flores (National Geographic). However, with the rise of poaching, human encroachment, and natural disasters, it has driven the species to endangered status.
There is a diversity of tribes that the human society was once uninformed of its existence. Until the 1970, mankind was unaware of the Korowai society existence. The Korowai also known as Kolufu are from the southwestern part of the western part of New Guinea. The Korowai tribe follows a common language, economic system, and an exceptional lifestyle. They practice ritual cannibalism and have incredible architecture knowledge. In the verge of extinction the Korowai continue to practice their unique culture which makes them different from other societies.
Koko is a very special gorilla. She can really communicate with humans using her hands. She was the very first gorilla to learn and understand American Sign Language.
Many scientists in the past, such as Aristotle and Plato, believed that there were no changes in populations; however, other scientists, such as Darwin and Wallace, arose and argued that species inherit heritable traits from common ancestors and environmental forces drives out certain heritable traits that makes the species better suited to survive or be more “fit” for that environment. Therefore, species do change over a period of time and they were able to support their theory by showing that evolution does occur. There were four basic mechanisms of evolution in their theory: mutation, migration, genetic drift, and natural selection. Natural selection is the gradual process by which heritable traits that makes it more likely for an organism to survive and successfully reproduce increases, whereas there is a decline in those who do have those beneficial heritable traits (Natural Selection). For example, there is a decrease in rain which causes a drought in the finches’ environment. The seeds in the finches’ environment would not be soft enough for the smaller and weaker beak finches to break; therefore, they cannot compete with the larger and stronger beak finches for food. The larger and stronger beak finches has a heritable trait that helps them survive and reproduce better than others for that particular environment which makes them categorized under natural selection (Freeman, 2002).
One of these animals is the platypus. The platypus is found all along the eastern coast of Australia. It can be found from Tasmania to north Queensland. Platypuses are small and have a dark-brown furry coat. Also, is has webbed-paws and a duck-like beak. The main difference between
They Hyena mostly live in Africa, south of the Sahara, but except in the Congo Basin. Also large numbers of Hyenas live in Ethiopia, British Somalialand, and Ngrongoro Crater. Their habitat is usually a flat grassland. It is mostly dry and sometimes rocky area. There are few trees or plants. Mostly there are shrubs. There are also some mountains in the region.
Evolution is a theory that argues that all organisms alive on earth today share a common ancestor. It is thought that through generations, specific changes or adaptations were established in species in order to help them survive, reproduce, and raise offspring. But how are we certain that these changes occurred? Today, there is an abundant amount of research evidence that suggests that anatomical and physiological alterations occurred to species that caused them to turn from aquatic animals to terrestrial animals, allowing them to survive different environmental conditions. The following are several gradual changes an aquatic organism must go through in order to move to land and adjust to its new terrestrial habitat: circulatory and most importantly respiratory systems must be improved, structural adaptations should be modified, development of a skeletal system to protect the body and organs, and an adjustment of the senses must also occur.