Essays on Gills

Introduction

Global warming is defined as “the rise in the average temperature of the Earth’s climate system and its effects” (Gills, 2015). There are various strands of scientific evidence that reveals that the climate system of the earth is indeed warming. Today, the scientific comprehension of global warming is expanding. A substantial amount of research has been done on the matter. However, there is still a debate going on about global warming. One side emphasizes the cause of global warming as human or anthropogenic activities, and that there is a need to mitigate the effects of global warming – that ...

Context of Globalization

Context of Globalization

Introduction

This paper examines how the concept of globalization is useful in comprehending changes in our society, and also explores how neoliberalism has driven the direction of these transformations. It discusses the notion of globalization, historical concepts that led to social changes and philosophical tenets that form neoliberalism.

Globalization is a term which explains transformations in the economy, politics, culture and social aspects around the world. The concept of globalization eliminates geopolitical boundaries between countries and promotes the global movement of products, services, and labor. Although many sociologists have explored the idea of globalization, they have not ...

“The Fish” talks about the interesting journey of the narrator who at first was just out to catch a fish, but ended up developing a deep understanding of nature and life through the fish. With the use of vivid imagery and abundant description, Elizabeth Bishop took the readers to the past struggles of the fish in order to stay alive, how its physical disfigurement reflecting those struggles translated into images of beauty and victory, and how these mental pictures elicited respect and admiration from the narrator.

True to its title, the narrator begins telling the story by talking about catching a fish.

I caught a tremendous fishand held him beside the boathalf out of water, with my hookfast ...

Lesson 5 Answers:

24.) Plants are classified into four major groups: Bryophytes, Pteridophytes, Gymnosperms and lastly the Angiosperms. Bryophytes are the plants that do not have true vascular systems, which consist of the xylem and the phloem. In this group, includes the mosses, liverworts and hornworts. Together, they are considered as land plants that reproduce their own asexually by producing spores. Spores are produced in the ‘sporangium’ (plural sporangia), a bulb-like structure located at the top of the stalk. It can only be seen through the use of high powered microscope. Because they lack vessels that can bring the nutrients from the roots ...

Introduction:

As with all living things, fish need oxygen in order to live. Fish have specialized organs called gills that are used to extract dissolved oxygen from water. In order to be able to extract the oxygen from water fish take in water through their mouths. This water is then forced into the gills. Gills are rich in blood vessels and have very thin walls. As the water passes through them, oxygen in the water is transferred through the thin walls to the blood stream. This oxygen is then transferred to cells.

Purpose:

The purpose of the experiment is to determine ...

This is the hardest thing that a friend can ever be called to do. I was up the entire night thinking of the best words to speak of our beloved Xerxes. However, I will share with you the life stages and major achievements of my friend and your king Xerxes. He was a man passionate about life and extensively determined to make change in his environment. As a king, he won a clear path for peace in our society. He possessed true values of leadership. My friend Xerxes was born in 519 BC in Persia. He was a child to Atossa, the ...

The opening line of Elizabeth Bishop's "The Fish" is a startling one, "I caught a tremendous fish" as the poet beams with pride at its size and her accomplishment. She clearly has the intent of keeping her catch alive as she continues, "and held him beside the boat/Half out of water, with my hook/fast in a corner of his mouth." She conveys the main parts of the scenery very well -- boat, fish, water, and hook. Her description of the setting is visual. Her diction relates a sense of ease as she continues: "He didn't fight./He hadn't fought at all." She depicts ...

Executive summary

This paper examines the operation of virtual global teams vis a vis heterogeneous groups from a single culture. The paper kicks off with an introduction explaining the difference thereof between global virtual teams and the latter. A general overview of the unique challenges typical for global virtual teams follows. Throughout the paper these challenges unique for global virtual teams form the pillar for the development of the skills needed to manage the teams.In this part, the challenges facing global virtual teams but are absent in the heterogeneous groups from a single culture are closely examined, citing the managerial skills needed by the ...

Report

Glaucus atlanticus – a kind of gastropod mollusks from the unit of nudibranchs. Nudibranch called a large group of marine gastropods. These animals are related to the usual snails and slugs, but at the same time, nudibranchs have a number of unique anatomical features. For this reason, they are isolated in a special unit, which has about a thousand species. The general principle of the structure of these animals is the same as at the garden snails, the basis of body is flat foot-sole, at the anterior end of which there are stalked outgrowths - one pair carries at its ends tiny eyes, and the ...

Abstract

Gulf Mexico oil spill also known as the Deep-water Horizon oil spill, BP Oil Disaster or the Macondo Blowout is considered to be the largest oil spill in the history of mankind. Such oil spills cause a lot of environmental as well as economic damages. Laws are in place to urge oil drilling companies to keep provisionary measures on the face of such disasters. But many situations went wrong causing a massive oil spill, a part of which still floats around in the seas. The following article is a discussion of the Gulf Mexico BP Oil Spill incident and what could have been ...

The First Wave Of Feminism

The three waves of feminism have helped women across the generations in more ways than one. Although there are a lot of individuals who still feel that women are not getting equal rights, the status of women in society has definitely improved. My personal journey in education and as a member of today’s society cannot be as it is today without these three waves. How I see myself and how I want to project myself is empowered because of the awareness I have of my rights, thanks to the leaders before me who stood up for women across the nation ( ...

Question 1: Echinoderms

Phylum Echinodemata gets the name from the Greek which means spiny skin. Therefore, members of this phylum have spiny skin although others do not have the spiny skin. Echinoderms have radial symmetry meaning they have appendages mostly occurring in a group of five with few in exception. One rare characteristic that occurs in the echinoderms is the water vascular system. This refers to a hydraulic system, usually with sea urchins and the sea stars and used for locomotion, waste transportation, food and respiration. This system comprises of canals that connect tube feet. The movement can be caused by the contraction of ...

Question 1

- Mytilidae - Ostreidae - Pectinidae - Acmaeidae

Question 2

First, I am going to talk about the family Mytilidae. This family consists of approximately thirty two different species. These species are found worldwide but do prefer colder seas more than the tropical areas and the hot areas. The intertidal zones are the places where they often form. The rocky shores happen to be the places that they like most but above all, they prefer large beds where they like to expose themselves. In as much as these are the places they like, they prefer sticking on to ...

The bony fish has several adaptive features that make it suited to its environment.

The most common shape of the bony fish is the roughly cylindrical form, which tapers at both the head and the tail. This shape allows for increased efficiency during swimming. Most species of bony fish have a form of pigmentation or the other. This pigmentation is an excellent way of camouflage the fish in its environment. The fins are another structure that aid, in no small way, in propelling the fish through water thereby bringing about movement from one place to another. Some of the fins are paired (the pelvic and pectoral fins), while the others are median ( ...

Lab Report Comparing the Anatomy of Crayfish and Grasshopper

Introduction The aim of the investigation is to compare and contrast the external anatomical characteristics of two classes of the Phylum Arthropoda, Class Crustacea and Class Insecta. A crayfish was used to represent the Class Crustacea and a grasshopper was to represent the Class Insecta. Arthropods are the most abundant and diverse group of animals on the planet. The organisms in this Phyla share common characteristics which include: the body of most arthropods is covered with chitin hardened into an exoskeleton. In crustacean, the chitin is hardened by calcium. In insects, the chitin is tanned, chemically bonded with ...

“This is a book about the positive evidence that evolution is a fact. It is not intended as an anti-religious book. I’ve done that, it’s another T-shirt, this is not the place to wear it again,” says Dr. Richard Dawkins in the introduction to his book The Greatest Show on Earth (17). This book is an organized presentation of copious numbers of the examples that support the evolutionary change over time via the process of natural selection. It raises many issues to a reader’s mind, and it helps provide a fuller understanding of the theory of evolution for the reader. ...

Different organisms occupy different environment, which requires them to adapt to those conditions to ensure their survival. In this sense, there exist vast physical forms between fish and mammals due to their opposing habitats (water and air respectively). However, the main distinguishing characteristic is the structure of their gaseous exchange system.

Fish use water as their respiratory medium. Hence they require an efficient respiratory system. This is because water has less oxygen than air. Fish require a complex respiratory system that will extract oxygen from water. The respiratory system of fish consists of evaginations of epithelium which are known as ...

Circulatory and respiratory Systems: An anatomical and physiological analysis

Circulatory and respiratory systems form the most important organ systems in any animal as they are both responsible for transporting the life sustaining element of oxygen to every cell and tissue in the body, while also collecting the wastes and disposing of them through various organs. However, the anatomy and the physiology of these systems differ radically in each classification of animals, in effect throwing light on the various stages of evolution in different types of animals. In this paper we shall discuss the circulatory and respiratory systems in four animals with regards to their anatomy and physiology so ...

Horseshoe crabs are arthropods with many appendages each having claws. Like other invertebrates insects and crabs they originate from kingdom animalia and division arthropoda. Horseshoe crabs are considered being untrue crabs and are closely related to scorpions and others with jointed legs like scorpions (Solomon et al, p.573)

Environmental Characteristics

Horseshoe crabs live in water in, oceans and seas. Horseshoe crabs have gills which they use for gaseous exchange. The crabs have six gills with about one hundred gill books on each. In ware, the water passes over the gill books. The gill filaments are able absorbs the dissolved oxygen present ...