Some of the different varieties of life forms were found in trilobites and conodonts. “Most fossils were found in shale, limestone, dolostone, and sandstone. In the tropical Ordovician environments, blastoids, bryozoans, corals, crinoids appeared. Many kinds of brachiopods, snails, clams, and cephalopods also appeared for the first time in the geologic record. Ostraderm remains from Ordovician rocks comprised some of the oldest vertebrate fossils.
Trilobites are found in the Tonto Group, Crinoids, Brachiopods the most common animal in the seas, Bryozoans, Corals, Sponges, and Burrows. Another type of layer is called the Terrestrial Fossils. In this layer there are several rock layers and fossils that form this whole layer. Some layers are called the Hermit Shale, Supai Group, Coconino Sandstone, and Surprise Canyon Formation. There are many types of fossils called leaves, Tracks, and Dragonflies.
Bilbo Baggins, the hobbit, is a hero not just because he helped save the dwarves from great casualties along their journey, but mainly for the special qualities he possesses that very few people hold. These unique qualities are courage, creativity, intelligence, and determination. Bilbo displays each of these qualities differently, adapting to the situation ahead. As the dwarves and the hobbit come across large numbers of spiders, the hobbit shows great courage by taking on all the spiders on his own to save his friends. In addition, Bilbo is also brave , but he also creative and smart to frustrate and distract the spiders from killing his friends.
Archaeology Essay: Bipedalism in hominids Introduction: Bipedalism is the defining characteristic of all hominins. It is what separates us from all other primates as it occurs uniquely in our species. The physical and mental characteristics of hominins has changed dramatically over our evolutionary timeline that has led to current day humans. If you were to compare a modern day human with our earliest hominin ancestors there are few similarities between them. However the one feature that unites all hominins is an upright posture and a bipedal gait.
Drosophila is a genus of small flies, belonging to the family Drosophilidae, whose members are often called “fruit flies”. One species of Drosophila in particular D.melanogaster, has been heavily used in research in genetics and is a common model organism in developmental biology. The entire genus, however, contains about 1,500 species and is very diverse in appearance, behavior, and breeding habitat. Scientists who study Drosophila attribute the species’ diversity to its ability to be competitive in almost every habitat, including deserts. (Ref to Book of Deepa Parvathi Va, Akshaya Amritha Sa, Solomon FD Paul).
The most characteristic physical features of a hominin is considered to be bipedalism and an upright posture. Humans, also referred to as hominins, differ from other hominids when comparing these features. It is the features that make us unique to other hominids. Bipedalism has gained hominins many advantages over quadrupedal hominids. The change of the skull in hominins is due to bipedalism and an upright posture which has made therefore helped hominins advance further than quadrupedal hominids.
The main places its found in is South America, Bolivia, Brazil, Ecuador, Colombia, and Peru. Many people think yellow fever is found in Asia but its not. Yellow fever isn't found in Asia yet, but could because of the primate population and the types of the mosquitoes found there (softschools). Yellow fever is thought to be originated in Africa and brought to the Americas on ships during the slave trades (medicinenet). Yellow fever is present in thirty African countries.
Chapter 2 LITERATURE REVIEW 2.1 Adenium obesum Apocynaceae is also generally known as Dogbane which is distributed mostly in the tropical regions. This family has 480 genera and 4,800 species around the worldwide and it is divided into 5 subfamilies. The 5 subfamilies are Rauvolfoideae, Apocynoideae, Periplocodeae, Secamonoideae and Asclepiadoideae. Each subfamily has its own characteristic, such as vines, perennial herbs, woody climbers, and shrubs. However, all of the subfamilies will contain latex which is usually clear, and milky.
Research conducted in 1982 by Ader and Cohern demonstrated the immune system could be classically conditioned. This was achieved by infecting mice with the disease Lupus, the mice were then treated with Cytoxan a drug used to suppress the immune system. During their treatment the mice would also receive a dose of saccharin solution just prior to the Cytoxan being administered. Ader and Cohern increased the amount of solution and decreased the amount of Cytoxan each day until only the saccharine solution was being administered. Their findings were astonishing, the immune systems in the mice had been conditioned to recognise the saccharin solution as the drug Cytoxan, which in turn eliminated the need for the medication.