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Pine Trees Low Intensity
1,600 wordsThe long leaf pine community, also known as a high pine community, occurs on well-drained soils and are well adapted to fires. They are found on the high ground in Florida where the soil can not contain the water and the sandy soil remains dry in between the rains. This community requires frequent, low-intensity fires, which occur every one to ten years, to open seed cones and allow the community to regenerate. The long leaf pine community is characterized by the presence of the long leaf pine t...
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Praying Mantis Sound Waves
1,809 wordsThere is an abundant amount of animal species in the world. They all have adapted and evolved to survive in their surroundings. Some have grown fins, others legs, and some have wings. Each adaptation helps them to survive in the particular environment in which they live. Some animals that are members of the same species have adapted and evolved. One adaptation is wings, and they are normally thought to be a feature of birds. One of the only animals that has wings and is not a bird is the bat. Th...
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Disease Called Life Cycle
1,268 wordsThe phylum Myxozoa falls under the domain Eukarya and were traditionally thought of as protozoa. Within the last two decades however more advanced identifying techniques have led us to believe that they are in fact metazoan's more closely related to Cnidarians, but this will be discussed later in this essay. There are approximately twelve thousand species of Myxozoa, and it is believed that there may be more than this number. Most Myxozoa are parasites which inhabit primarily tissues and organ c...
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Central Nervous System Peripheral Nervous System
1,508 wordsThe only multi-cellular animals without a nervous system are sponges. They do not have any nerve cells or sensory cells. Despite this, touch or pressure to the outside of a sponge will cause a local contraction of its body. Cnidarians The jellyfish and most all other forms of cnidarians, such as the hydra and sea anemone, are characterized by a nerve net. A nerve net is a series of interconnected nerve cells that conduct impulses around the jellyfish's entire body. The strength of the jellyfish'...
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Begin To Develop Pituitary Gland
1,294 wordsNovember 16, 1995 Hundreds of thousands of times a year a single-celled zygote, smaller than a grain of sand, transforms into an amazingly complex network of cells, a newborn infant. Through cellular differentiation and growth, this process is completed with precision time and time again, but very rarely a mistake in the 'blueprint' of growth and development does occur. Following is a description of how the pathways of this intricate web are followed and the mistakes which happen when they are n...
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Cloning Of Animals Enucleated Egg
967 wordsWhat is a Clone? A clone is a group of genetically identical cells. For example, tumors are clones of cells inside an organism because they consist of many replicas of one mutated cell. Another type of clone occurs inside a cell. Such a clone is made up of groups of identical structures that contain genetic material, such as mitochondria and chloroplasts. Some of these structures, called plasmids, are found in some bacteria and yeasts. Techniques of genetic engineering enable scientists to combi...
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Million Years Ago Long Period Of Time
1,219 wordsFrom Water to Land (Revision) Abstract: The early tetrapods were the first vertebrates to actually walk the solid earth. They began their conquest of land in the Paleozoic era around 360 million years ago. The question many paleontologists have been asking for a long period of time is whether the anatomy for locomotion on land was developed in water for swimming purposes, or if it was adapted after the creatures became terrestrial. Recent findings of fossils indicate that the transformations of ...
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Million Years Ago 65 Million Years
3,666 wordsIntroduction To Evolution What is Evolution? Evolution is the process by which all living things have developed from primitive organisms through changes occurring over billions of years, a process that includes all animals and plants. Exactly how evolution occurs is still a matter of debate, but there are many different theories and that it occurs is a scientific fact. Biologists agree that all living things come through a long history of changes shaped by physical and chemical processes that ar...
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White Blood Cells Defense Mechanisms
1,177 wordsEvolution of Immunity and the Invertebrates Article Summery Name: Immunity and the Invertebrates Periodical: Scientific American Nov, 1996 Author: Gregory Beck and Gail S. Habitat Pages: 60 71 Total Pages Read: 9 The complex immune systems of humans and other mammals evolved over quite a long time in some rather surprising ways. In 1982 a Russian zoologist named Elie Metchnikoff noticed a unique property of starfish larva. When he inserted a foreign object through its membrane, tiny cells would ...
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University Of Wisconsin Bone Tissue
880 wordsGreg Graffin The band Bad religion was formed in the early eighties and has now been around over 15 years and has released over eight albums, the lead singer has continued his schooling and now has one bachelors degree, a masters and is working on his Ph. D. Greg Graffin was born in 1965 in Wisconsin. His mother and father were divorced after his birth. In 1976 his mother his brother and him moved to San Fernando valley California, which is now the punk rock capital of the world. Like millions o...
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Hearing Loss Paying Attention
1,121 wordsThe ear is the organ of hearing and balance in vertebrates. The ear converts sound waves in the air, to nerve impulses which are sent to the brain, where the brain interprets them as sounds instead of vibrations. The innermost part of the ear maintains equilibrium or balance. The vestibular apparatus contains semicircular canals which in turn balance you. Any movement by the head, and this apparatus sends a signal to the brain so that your reflex action is to move your foot to balance you. The e...
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Endocrine Glands Amino Acids
1,069 wordsHormones are organicHormi? one Introduction Hormones are organic substances that are secreted by plants and animals and that function in the regulation of physiological activities and in maintaining homeostasis. They carry out their functions by evoking responses from specific organs or tissues that are adapted to react to minute quantities of them. The classical view of hormones is that they are transmitted to their targets in the bloodstream after discharge from the glands that secrete them. T...
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Cold Blooded Oxygenated Blood
1,437 wordsMammals have existed for the past 200 million years. According to fossil evidence, they evolved from a mammal like reptile group. These reptile ancestors were small, active carnivores. They were equipped with several specialized types of teeth. Their limbs were positioned more directly under the trunk as opposed to spreading out to the sides. Both of these characteristics are prominent features of mammals. For the past 70 million years mammals have been the dominant animals in terrestrial ecosys...
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Blood Pressure One Hundred
566 wordsIn vertebrates, kidneys Kidneys Kidneys In vertebrates, kidneys are the two major organs of excretion. Excess water, toxic waste products of metabolism such as urea, uric acid, and inorganic salts are disposed of by kidneys in the form of urine. Kidneys are also largely responsible for maintaining the water balance of the body and the pH of the blood. Kidneys play important roles in other bodily functions, such as releasing the erythropoietin protein, and helping to control blood pressure. Kidne...
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Million Years Ago Endocrine Glands
1,421 wordsHuman Biology and Evolution Humans are Alive The earliest human life form can be traced back more than 3. 5 billion years ago. Humans are said to be descendants of a single celled ancestor. Although they are different in size and shape all basic functions are alike. The more complex the organization of the cell became the more successful and developed it became. As these single celled organisms developed they became known as pre-humans. We share many characteristics with these pre-humans. Some o...
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