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The biodiversity of an ecosystem.

Invasive species can be detrimental to the biodiversity of an ecosystem. They thrive in a new territory where they are free of predators, diseases, or resource limitations. The links below provide a list of plant and animal species in Indiana that are considered invasive. In at least 500 words and using 3 (or more) credible sources, choose one invasive species to describe by answering the following questions:

  1. Where is this species originally from? How was it introduced to this area?
  2. Why is this species considered invasive? What properties about this species makes it a threat?
  3. What laws or practices are in place to prevent the spread of this species? Have you seen this species before? What could you do to help prevent the spread of this species or its impacts?

Use the links below to help you get started. Be sure to cite your sources in your paper. You may use the sources provided below and your textbook, but at least 2 of the required 3 sources should be found on your own. Wikipedia is not a credible source.

Sample Solution

ased production of permeability factors. This phenomenon is known as the enhanced permeability and retention effect [13, 57, 61]; (6) increased active agent surface area results in a faster dissolution of the active agent in an aqueous environment, such as the human body. Faster dissolution generally equates with greater bioavailability, smaller drug doses, less toxicity[62]. (7) Can be used for different routes of administration, including oral, nasal, intra-ocular and surface characteristics can be simply manipulated to achieve both passive and active drug targeting after parenteral administration and (8) reduction in fed/fasted variability (9) due to the impressive bioavailability, better encapsulation, control release and less toxic properties, various nanoparticle systems with biodegradable polymers such as PLGA, PLA, chitosan and gelatin are utilized for delivery of drugs of various types of diseases with better efficacy [63]. (10) In recent years oral bioavailability of many of poorly water soluble drugs can be modified by incorporating drugs into pH sensitive nanoparticles . (11) Nanoparticles are now used to study the expression of therapeutic genes, is a useful tool for gene therapy. Pharmaceutical nanocarriers, that are designated as NPDDS, can be classified in different ways, which are according to the raw materials, physicochemical characteristics (size, charge, number of lamellae, permeability), preparation methods, in vivo behavior. In a classification according to the materials used in their preparation, NPDDS can be of lipidic nature as liposomes, micelles, Transfersomes, and solid lipid nanoparticles, or of polymeric nature as nanoparticles, micelles, and niosomes [65-67]. Various materials can be used to prepare nanoparticles such as proteins, polysaccharides and synthetic polymers. The choice of matrix materials is dependent on numerous factors, including : (a) size of nanoparticles required; (b) natural properties of the drug, e.g., aqueous solubility and stability; (c) surface characteristics such as charge and permeability; (d) degree of biodegradability, biocompatibility and toxicity; (e) Drug release profile wanted; and (f) Antigenicity of the final product. In recent years, polymer–nanoparticle composite materials have attracted the attention of a number of researchers, due to their synergistic and hybrid properties derived from several components. Whether in solution or in bulk, these materials offer unique properties (mechanical, electrical, optical and thermal) [69]. The field of polymer nanoparticles (PNP) is rapidly growing and playing a pivotal role in a broad spectrum of areas ranging from electronics to the Photonics, conducting materials to sensors, medicine to biotechnology, pollution control of environmental technology, and so forth, during the last decades [70, 71] . New and newer polymers have been trying to develop nanoparticles for their application as drug carriers. Craparo et al., 2008 described the preparation and physicochemical and in vitro biological characterization of nanoparticles based on PEGylated, acryloylated polyaspartamide polymers.

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