Bivalves

Scientists have discovered that during life on Earth there has been 5 mass extinctions. These mass extinctions are said to be a normal part  of life and might even be an important factor for life on Earth. The main mass extinctions that have been discovered are the Ordovician Mass Extinction, the Devonian, Permian, Triassic, and the Cretaceous Mass Extinction. Scientists now even believe that we are not only part of the problem but the main subjects of the sixth mass extinction caused by…

for the Population in Nha Trang City, Vietnam” (Nguyen et al, 2013), the concentration range of Cd in shellfish is 0.013 – 0.056 mg/kg. About the pollution of heavy metals, the anabiosis of Cd was 97%. In gastropods, cephalopods, crustaceans and bivalves, the concentrations (mg/kg) of Cd in 5 sampled months were 0.033 – 0.072, 0.012 – 0.013, 0.019 – 0.034 and 0.032 – 0.073 in the range, and the mean concentrations (mg/kg) were 0.054, 0.013, 0.026 and 0.056. About the shellfish groups’…

Results and Discussion Shellfish is considered a good indicator for environmental pollution with heavy metals, simply because it can accumulate high levels of these metals. However, these organisms are considered valuable source for animal derived protein, vitamins and essential trace elements, especially for people living nearby sea. Thus, estimating the residual levels of these metals, in particular the toxic ones, assessment of the possible human health risks and trying to find effective…

Comparing the Intrinsic Similarities and Characteristic Differences in Arthropods and Mollusks. Coastal regions possess a unique characteristics in which all plant and life forms have to adapt in order to be able to survive in such regions. One major characteristic of these regions is due to the constant wave motion of the seas in coastal regions. Hence, life forms such as Arthropods and Mollusks, predominant life forms present in these coastal regions, adapt and specialize to be able to thrive…

“No man for any considerable period can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true”- (Nathaniel Hawthorne). Throughout the book, characters in the novel possess names that correspond to their personalities and/or actions. However, many of the character's personalities or actions are hidden. These hidden meanings serve as symbols for the reader to help understand the complexity of their illusioned- public persona. In The…

A The Last Police Man _____________________ B A Lovely Sense of Lower Purpose Soldier’s Home The First Day _____________________ C Civil War Land in Bad Decline The Road _____________________ D Hell for This _____________________ F I Found the Shell Include Soldiers Home: This short story by Ernest Hemmingway is a recommended addition to the magazine because it successfully addresses issues with attempting to re-enter into one’s old life. This work focuses particularly on a Soldier who…

Biomphalaria glabrata is a freshwater snail that originates from Central and South America. The NMRI strain of Biomphalaria glabrata exhibits albinism. The snails’ albinism makes them transparent, which provides the opportunity to observe their circulatory anatomy and physiology. They lay eggs in masses, with 2-30 eggs per mass. The eggs go through several developmental stages. First, they are fertilized. Each egg contains a single embryo, which then begins to grow. Each embryo measures…

The Saldanha Bay Oyster Company has two different buildings where they get the oysters market ready. The first is situated by the ocean, where they deliver the oysters. The oysters are also being cleaned and assessed in this building, they are checked to see if they are fully grown and/or if they have diseases. After this process, they are taken to the second facility which is a few meters away from the first one, and in this facility the oysters are further cared for and developed, getting…

The most critical effect of overfishing, however, is resulting in species imbalance in the ecosystem. It is a common sense that there is such connection called food chain, which is a series of events where one creature eats another and then is eaten by another creature, exists in an ecosystem, and each of every living organisms has a place on this chain. If, all of a sudden, one specific type of species decreases immensely in amount, this phenomenon will undoubtedly affect other living creatures…

Earth is covered in approximately 71% water, 97% off all Earth’s water is found in oceans which provide for life on earth. Oceans are important because they provide over half of all oxygen in the atmosphere, but also absorb large amounts of gasses from the atmosphere. Unfortunately oceans are under the constant threat of not just overfishing or pollution, but mainly acidification which damages delicate ecosystems greatly. Ocean acidification is caused by the uptake of carbon dioxide (CO2) in the…