Page 1 of 10 - About 92 essays
  • Essay about The Ancient Relatives of Mammals

    527 Words  | 3 Pages

    The mammalian line of descent reaches back to over 300 million years. The ancient relatives of mammals were extremely different in terms of appearance from living mammals, and are often mistaken for reptiles (for example dinosaurs). In reality though, these relatives of mammals, called synapsids, are more like mammals than reptiles. Synapsids are often described as “mammal-like reptiles” because they show both reptilian and mammalian traits. They lived right before the Mesozoic Era, during the Permian

  • Overview of Earth´s History and Periods Essay

    2814 Words  | 12 Pages

    Precambrian Era The Precambrian era laster 4600-541 million years ago. During this time, there were no plant life on the planet. Most of the things that were on the planet were rocks. The most common type of rock was Isua greenstone. Most rocks have been eroded away, subducted, or metamorphosed. During this time, the atmospheres and oceans were formed, plate tectonics began to build up continental masses. The air during this time was mostly made up of water vapor, carbon dioxide, and nitrogen.

  • The Presentation The 6th Mass Extinction Essay

    1997 Words  | 8 Pages

    From the presentation the 6th mass extinction: 1. Describe what biodiversity is and why biodiversity is so important. Biodiversity is the variety of spices within plants and animals in the environment, it is an indicator of ecosystem health. The importance of biodiversity: Biodiversity provides humans with food and materials (like wood) that benefiting the economy. Biodiversity performs a variety of ecological services: from absorbing chemicals to cleaning water and providing oxygen. Some types

  • Persuasive Essay On Climate Change

    1442 Words  | 6 Pages

    One topic that biologists are most interested in is the patterns of life on Earth. One of the ultimate questions for a biologist to answer is how do new species arise, and for what reasons do they disappear? Biologists all over the world are searching for answers regarding the rapidly diminishing amounts, and in some cases, extinction of many of Earth’s species. Scientists are coming out with results that show current anthropogenic climate change is the main culprit for Earth’s continuing loss of

  • Essay Tetrapods

    1098 Words  | 5 Pages

    The early Devonian period is largely considered to be a world of a diverse array of lobe-finned fish, including lungfish, coelacanths, and bony fish. Over the course of time, vertebrates made evolutionary strides with provided them with the ability to travel on land. Coelacanths developed a single boned shoulder girdle, lungfish developed paired fins, and sauripterus developed the major structures on the arm (humerus, radius, and ulna). As these developments progressed and environmental pressures

  • Analysis Of Elizabeth Kolbert's The Sixth Extinction

    1575 Words  | 7 Pages

    “In pushing other species to extinction, humanity is busy sawing off the limb on which it perches” (The Sixth Extinction, 268). This powerful quote, by Stanford ecologist Paul Ehrlich, accurately sums up the main message conveyed in Elizabeth Kolbert’s most recent and most successful book, The Sixth Extinction: An Unnatural History. Elizabeth Kolbert is an experienced journalist and author who is currently working as a “staff writer at The New Yorker.” While Elizabeth Kolbert has written on a variety

  • Paleozoic Era Observation Report

    526 Words  | 3 Pages

    As, the director, of the natural history museum I have created a display dedicated to the Paleozoic time period. In order to boost the attendance, I have designed an interactive set of exhibits and displays for the Paleozoic Era. Guest will enter the museum together in a main room once everyone was seated you would turn down the lights and with a 3 - D show the beginning of the era which was the breakup of one supercontinent and the formation of another. A speaker will explain how the Paleozoic

  • Johnstown Quadrangle Essay

    446 Words  | 2 Pages

    The quadrangle is considered to be a part of the Allegheny Plateau, so the rocks in this region are mostly of Carboniferous age. Carboniferous rocks are subdivided into two series: the Pennsylvanian and Mississippian. The rocks of both series mainly consist of alternating beds of shale and sandstone, but Mississippian rocks on southern parts of the plateau include thick limestones

  • Arthropleurus Research Paper

    527 Words  | 3 Pages

    and the creepiness of slithery millipede. So let’s turn back time, and revisit the jaw-dropping period of time known as Carboniferous. In the U.S., scientists divide the Carboniferous into two parts: the earlier Mississippian (359.2 million to 318.1 million years ago) and the later Pennsylvanian (318.1 million to 299 million years ago). To thoroughly understand the Carboniferous Period, you should first know the definition

  • How Does Pangea Have So Much Biodiversity

    2064 Words  | 9 Pages

    Sathusdigan Nirmalanandha ID. 2816176 GEOL 1404.83501 Diana Vineyard 04/24/2016 Pangea-The lost Super Continent Our planet is carrying so much secrets while it rotates its axis, and revolves around the sun in elliptic path. The biggest question man that ever faced is, why do living organisms have so much biodiversity since they all come from a common ancestor? In order to answer this question, we have to see the earth’s past life. Rodina is the first supercontinent