Essays on Amphibians

Introduction

An ecosystem is defined as the interaction of the organism and other nonliving factors in a certain community. The living components of an ecosystem, such as plants, animals, and other organisms, can be classified as the biotic component of the ecosystem, whereas the environmental conditions such as water amount, humidity, soil nourishment, temperature, and the like are termed as the abiotic factors. In an ecosystem, both the existing biotic and abiotic factors determine what kind of species live there. For example, turtles, which require a large amount of water to live in cannot possibly hope to survive in arid ...

Over a period of 400 million years, animals in the vertebrate category have evolved to a diverse array of life adaptations on earth. Vertebrates represent animals that are most familiar with people and are used for food, adopted as pets and deployed for labor. They include fish, reptiles, birds, amphibians and mammals. The classification system that groups vertebrates according to each of the classes that have been mentioned above utilizes genetics, anatomy, and the evolutionary relationships. Animals are classified starting with the kingdom which is a large body that encompasses animals that have similar characteristics and end up with ...

Lab Report: Food Behaviourism in Japanese Red Belly Newts

Abstract The current experiment sought to determine the food of choice by Japanese Red Belly Newts. Fifteen Japanese Red Belly Newts were introduced into three sets of tanks. Food was introduced into the tanks in the first tank (control group) was given blood warms while in the other two tanks, beef hearts, blood worms, and crickets were introduced. We found out that salamanders become very active, aggressive, and territorial when it came to securing food for themselves in the tank. At the initial stages before realizing any food was added into the tank, the salamanders were quite calm and ...

Economic and cultural sphere has always been the sole driver of many nations gearing towards development, stability and create revenue for the respective nations. However, issues have been raised over the years pertaining the attributes of technology towards both fields. As much as technology serves as the key point in ensuring development for a nation revolving around the two spheres, still, there are mixed reactions focusing on the issue of technology and development.

Thesis Statement

However, this paper focuses on Yasuni, Ecuador, which is one of the existing diversified forests in the world. Our attention is directed to the questions posed by ...

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

The study explored the homological characteristics of 22 species. The organisms were human, pygmy chimpanzee, common chimpanzee, gorilla, orangutan, white-handed gibbon, macaque (Cercopithecine monkey), horse, bison, cat, dog, bird, bat, frog, rattlesnake, alligator, fish, whale, wolf, pig, bacteria, and cow. The species were categorized as mammals, reptiles, birds, fish, or amphibians. However, humans and apes were further classified as primates. Moreover, the research sought to determine whether the species share characteristics that link them to a common ancestor. The research hypothesis was that if the evolutionary path of the 22 organisms were traced, then a common ancestor would be observed.

Universal Genetic Code

The ...

EXECUTIVE SUMMARY

Sustainable forests are managed effectively in order to preserve the ecosystems and the forest. The ecological systems that are reliant on the forest are the streams, watershed and the species that inhabit within the environment. The forest is a working environment that can be harvested for the production for paper and pulp products. The sustainable forest management is an outcome of applying the forest to the benefit of all while conserving the ecological systems that are reliant of the forest. Healthy streams are reliant on the forest for their coverage. The forests also enable the lowing of the temperature in ...

Abstract

The Great American Interchange lasted for about two million years between North America and South America. The objective of the essay is to look at the symmetrical results of the great American interchange in the beginning and how the interchange became asymmetrical after time progressed. The unbalanced nature of the interchange offers a model to explain the asymmetrical results of the land-mammal interchange between the two Americas. Both Geological and biological data are looked into the get insights the past and present distributions of fauna.

Introduction

The Great American Interchange is a crucial paleo zoogeographic event that occurred between North America and ...

Background and significance of the problem

Salmonella species are a group of Gram-negative enterobacteria associated with human and animal infections. There are two types of Salmonella strains viz. Typhoid Salmonella and non-typhoid Salmonella (NTS). The former causes enteric fever that leads to significant morbidity and mortality, especially in the developing countries. The epidemiology of Salmonella infections vary considerably depending on the species involved. The enteric fever caused by S. typhi and S. paratyphi is severe and life threatening condition whereas NTS infections are self-limiting. Humans serve as the reservoirs for typhoid Salmonella that transmits predominantly through water. On the contrary, NTS strains harbor animals as reservoirs ...

In evolution, medicine, as well as ecology, it is recognized that nature together with symbiotic interactions’ outcome are frequently context-dependent. However, the importance of context-dependence in symbiosis associated with diseases of wildlife. The availability of information that context-dependent symbiosis is important and common has resulted in evolutionary theory development, enhanced the apprehension of activity of bicontrol in agriculture and intensified the apprehension of ecologies of several species and contributed to human medicine. The authors of this paper reviewed the proof for context-dependency in symbioses, in various taxa, as well as disciplines. Symbioses are used as a variable, and chytridiomycosis, the ...

Oil and Gas Exploration in the Ecuadorian Amazon Forest

Town/City Abstract There is a projected 3.8 million cubic meters of oil connected pollution in the Ecuadorian Amazon forest .From 1964 to 1992 Texaco, currently owned by Chevron, extracted oil from reservoirs beneath the Amazon rainforest in Ecuador and not carefully discarded the drilling solids as well as liquids connected to oil extraction in pitfall through the forest. Furthermore, Texaco’s processing plants pumped the wastewater into the local water systems. The slapdash dumping of about 18 billion gallons of wastewater as well as 17 million gallons of waste oil has yet to be correctly assessed and hundreds ...

Environmental Studies

The need for a precise forecasting of the impacts of climate change on the future distribution of the Earth's principle biome is increasing. In this paper, forecasting methods covered include: the niche-theory models which categorize species by habitat (particularly environmental conditions where species may persist or perish). The general circulation models and the species-area curve models which consider large groups of species or all species. The existing climate models based on approximations of increasing carbon dioxide and, to some extent, by lessening sulfate aerosols, forecast that temperatures will rise by 2.5-10.4oF (1.4-5.8oC) between the year1990 and 2100. Greater warming ...

Invertebrates are animal genus that lack or do not build up a spinal column. They account for the largest percent of all the living species. The first animals to have evolved were invertebrates. Data from fossils collection shows that invertebrates were there 600 million years ago. Some paleontologists propose that invertebrate animals emerged much earlier probably one billion years ago. Trace fossils such as burrows and tracks established in the Tonian age signify the presence of triploblastic worms approximately as large and complex as earthworms. Animals began diversifying at around 453 MYA, and many of the essential groups of invertebrates ...

Question2

Isolating mechanisms is the reproductive features which inhibit species from fusing. They are mainly significant in the genetic species concept, whereby species of organisms are distinct by generative isolation, that is, an absence of gene mixture. They include: - Premating isolating mechanisms – these are aspects that cause species to mate with their own kind (assortative mating), thus prevents the union of gametes to forma zygote. An example is a behavioral isolation technique where prospective mates meet, but select members of their own species. - Post-mating isolating mechanisms –this involves issues regarding genomic mismatch, sterility hybrid or in-viability which ...

1. In his lecture, Dr. Tyrone Hayes discusses the effects of Atrazine on amphibians and the potential effects of the drug on human health. In his lecture, Dr. Hayes supports his argument using research findings and presentations. In his findings, Dr. Hayes explains that atrazine has severe effects on the sexuality of amphibians and may cause serious health effects on humans who are exposed to the chemical. Dr. Tyrone also advocates on the development of regulations to curb the use of atrazine. 2. The most intriguing part of Dr. Tyrone’s presentation, is where he “crosses ...