Flatworm

Introduction Schistosomiasis is second only to malaria in the number of people the disease disables or kills around the world(LAPA***). It is a tropical disease that is a major source of morbidity and mortality for developing countries in Africa, South America, the Caribbean, the Middle East, and Asia (LAPA***). In these endemic areas, there are no resources for access of fresh drinking water and adequate sanitation. Therefore, human feces are the main source for spreading of Schistosomiasis.…

Fresh water lake ecosystems are very susceptible to invaders which degrade lake habitats and food webs. The Chinese mystery snail (Bellamya chinensis), referred to as Bellamya, is an understudied invasive species that is becoming more abundant in the fresh water lakes of North America and poses a threat to the ecological community of the Great Lakes. Understanding how Bellamya can effect lake ecology is critical to preventing the possible extinction of native snail species and the degradation of…

THE AMAZING CIRCULATORY SYSTEM The circulatory system preforms many different jobs. It carries oxygen to the cells of the body and it also caries nutrients throughout the body to make heat and energy. In addition to that, the vascular system delivers hormones to specific organs. Another thing the circulatory system does is collect metabolic waste and deliver it to the excretory glands. Lastly, the circulatory system works with the immune system to help fight infection and defend. The fact that…

Colleen McCracken Mrs. Doll Hon Biology 28 April 2017 Saltwater Biome “Dream big.” “Bigger is better.” One may have heard many phrases about “big” or “bigger.” But why not say “Dream saltwater biome.”? After all, the saltwater biome is the largest biome on Earth and covers roughly 70% of our planet (KDE Santa Barbara 1). A biome is a community of both flora and fauna in a large habitat (Postlethwait and Hopson). The saltwater biome is a community in a saltwater habitat. This group of similar…

Introduction The purpose of this statement is to address the recent changes to the South Carolina Curriculum Standard. Research will be conducted on both Evolutionary theory and Intelligent Design theory to determine if high school biology teachers should teach their students Intelligent Design as a valid alternative to Evolutionary theory. Intelligent Design The Intelligent Design theory argues that the world and all the creatures in it were created not by random mutations and evolution, but…

James Lovelock, fundamentally formulated the theory that our Earth is unique and complex because the Earth is a self-regulating system that replenishes itself for the species, in order to maintain homeostasis, within the system. Lovelock interestingly familiarizes our Earth to the nature of human beings, such as the Earth’s skin are forests that sweat to preserve the cooling of the Earth, while the oceans are rivers of blood that flow through the veins of Earth transporting nutrients and washing…

system, they require certain nutrients to be readily available. Because of this, another mechanism takes place, whether it is the movements of coelomic fluid or the exchange of gases and wastes by each cell being exposed to water. In the case of flatworms, a thin body wall replaces the circulatory system. Diffusion takes…

parasitic worm that can be found in many organism in the Great Barrier Reef, but when it attaches itself to a snail, the snail instead of reproducing snails reproduces parasites instead.(13) Monogenea and Southern Fiddler Ray: Monogenea are parasitic flatworms that are virtually invisible to the human eye, it feeds off the skin of its host and is undetected by other predators.(14) Human impacts on the Great Barrier Reef: Overfishing: Since fishing is now done by using nets attached to boats…

Invasive species are easily comparable to the explorers of the old days. Explorers could be helpful by introducing new supplies, like horses, during the big Columbian Exchange. Explorers could also be largely negative, bringing disease and slavery into the nations they conquered. Explorers sometimes just set up trade relations and left well enough alone. Much like these explorers, invasive species have the propensity to help, hurt, or assimilate into their new surroundings. Experts on invasive…

Kingdom: Animalia Phylum: Porifera Classification information for Poriferans: Poriferans, better known as sponges, consist of 5000 known species, all located primarily in marine and fresh waters (Myers, 2001a). They are multicellular, heterotrophic, invertebrates with an irregular shape and no distinct pattern of symmetry (Myers, 2001a). Overall, they are the simplest of animals; thus, lacking any true tissue and/or germ layers (Myers, 2001a). Furthermore, they are known to be highly sessile,…