Threatened species

Hypothesis originates from Elton’s conviction involving the heavy invasion of species imperfect systems. Biological Invasions, specifically invasive species are exotic species that cause environmental…

The Difference in Frogs Humans are all under the same general specification of Homo sapiens, but they are all different from height all the way to thoughts. The same goes for any other types of species with the same universal name. Each are disparate like frogs for example. The term frog is a synonym to its more specific name: Amphibians. Both of these names are umbrella terms for these animals. Yet, there are many different varieties of frogs such as the Turtle Frog and the Clawed Frog.…

capacity of suffering and enjoyment, or in other words, sentience. Throughout this chapter, Singer makes his readers see that if one rejects racism and sexism, one must also reject the idea of giving special consideration to the interests of one species over another one. In this essay, I will firstly reconstruct the arguments used by Singer to arrive at the conclusion that all animals are equal. Secondly, I will evaluate the justifications that he uses to arrive at such claim. Finally, I will…

Metamorphosis is a biological process by which an animal physically develops after birth or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell growth and differentiation. “Some insects, fishes, amphibians, mollusks, crustaceans, cnidarians, echinoderms and tunicates undergo metamorphosis, which is usually accompanied by a change of habitat or behavior”. (http://en.wikipedia.org/wiki). But this change has been incorporated to human’s life…

A LIVING HAZARD: BRACKEN FERN [Pteridium aquilinum (L.)Kuhn] INTRODUCTION With their large, shiny green and highly dissected leaves, ferns are so visually appealing and many of them are sold as ornamentals. But certain fern species can create substantial problems and they are herein called “problem ferns”. Pteridium aquilinum (bracken fern) is one of the problem ferns which cause the greatest range of problems on ecology and human welfare. Bracken fern has been described as one of the five…

between trait and fitness, in which the trait contributes to the organism’s fitness by enhancing its chances of surviving or reproducing. A trait can both increase or decrease fitness depending on the environment. A trait might be adaptive for a species if it increases the fitness of the organisms since natural selection favours the best adapted forms. In this particular experiment, if the alternative hypothesis is justified, the increasing in the size of the lids in N. gracilis is a trait that…

some extraordinarily unique and diverse organisms. Of such organisms, reptiles and amphibians are some of the most adaptable organisms on Earth, residing on every continent except bitter cold Antarctica. Here in Minnesota, There are 22 species of amphibians and 31 species of reptiles, ranging from the fast moving salamanders to the slow and nimble turtles. I got the opportunity to further research the Blanchard’s cricket frog, in hopes of understanding their feeding behavior, reproductive…

Adaptive Radiation Adaptive radiation is the fundamental mechanism responsible for the great variety of animal and plant species observed today and that dominated the Earth surface in the past (MacDonald, 2003). In simpler terms, adaptive radiation is the diversification of species to occupy a wide range of ecological niches. The term ecological niche describes the role of a species within its surrounding environment; its interaction with the biotic and abiotic environmental factors; its…

other our task was to display information on the relationships between two species we discovered at the Rocky Shore we then use this information to form a report and explain the species and their relationship with one another, but before this we need to understand the definition of zonation; zonation is the distribution of species into invisible bands or zones along a changing gradient of environmental factors. The two species I chose are The Actinia Tenebrosa, more commonly known as the Red…

Biotic factors include all of the living things such as plants, animals, bacteria, fungi and humans living in an area. The interactions between them such as competition, predation, mutualism and parasitism show that each species in an ecosystem has a direct effect on the other species in the ecosystem. Meanwhile, abiotic factors are the physical and chemical components of an ecosystem such as intensity of light, range of temperature, gases, water and weather. The abiotic factors present in an…