Water pollution is the contamination of water bodies (e.g. lakes‚ rivers‚ oceans and groundwater). Water pollution affects plants and organisms living in these bodies of water; and‚ in almost all cases the effect is damaging not only to individual species and populations‚ but also to the natural biological communities. Water pollution occurs when pollutants are discharged directly or indirectly into water bodies without adequate treatment to remove harmful compounds. Contents [hide] • 1 Introduction
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Homosexuality Is Not Normal Sexual Behavior In 1973‚ the American Psychiatric Association (APA) removed homosexuality as a mental disorder from the APA’s Diagnostic and Statistical Manual of Mental Disorders. This decision was a significant victory for homosexual activists who have continued to claim that the APA based their decision on new scientific discoveries that “proved” homosexual behavior is normal and should be affirmed in our culture. This is false and part of the numerous homosexual
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infection is thrush caused by Candida albicans . Protozoa are microscopic organisms‚ but larger than bacteria. Free-living and non- pathogenic protozoa include amoebae and paramecium. Ex amples of medical importance include: Giardia lamblia which can cause an ent eritis (symptoms of diarrhoea). Parasites Worms are not always microscopic in size but pathogenic worms do cause infection and some can spread from person to pers on. Examples include: threadworm and tapeworm
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Thesis Statement: Water pollution is bringing down the economy‚ destroys the beauty of nature‚ and causing harmful dreaded diseases and sickness in precious health of many individual. INTRODUCTION Water pollution progresses every day in our lakes‚ oceans‚ rivers‚ and other bodies of water that we see and use in many ways. Water is essential for all living things to survive‚ yet people still pollute it. It’s pretty sad to be taking a trip to the beach with your family and you get there to see
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The three-domain system is a biological classification that divides cellular life forms into archaea‚ bacteria‚ and eukaryote domains. It emphasizes the separation of prokaryotes into two groups‚ called Bacteria and Archaea. These two groups and eukaryotes each came from separate ancestors with poorly developed genetic make-ups. This classification system recognizes the fundamental divide between the two prokaryotic groups. Archaea appear to be more closely related to eukaryotes than they are to
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Funguslike Protists * heterotrophs‚ decomposers * called slime molds and water molds Dog Vomit Slime Mold Mushroom Plantlike Protists: Red‚ Brown‚ Green Algae Green Algae: Phylum Chlorophyta Unicellular green algae‚ Colonial (volvox)‚ Multicellular (ulva‚ sea lettuce) Spirogyra live in water‚ multicellular named after a spiral shaped chloroplast autotrophic Diatoms (Plantlike Protist) produce thin cell walls of silicon‚ main component
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1. Distinguish between viruses‚ bacteria‚ rickettsia‚ fungi‚ parasites‚ and prions. 2. Viruses: RNA or DNA‚ obligate intracellular parasites. Seek “permissive cells to infect. Some strains have shown periodic changes by have mutations and forming new strands; Require a tissue culture in order to grow; Consist of RNA or DNA in a protective glycoprotein coat; Influenza – Dengue Fever – carried by mosquitos St. Louis encephalitis virus – carried by mosquitos HIV Hepatitis – Makes skin a yellow
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Water testing is carried out for ions‚ colour‚ pH‚ hardness‚ turbidity‚ conductivity‚ micro-organisms. Alternative methods of filtration such as membrane filtration may be both more efficient in removing particles including microorganisms such as Giardia and Cryptosporidium. However‚ these techniques are expensive to execute. Monitoring of catchment and treatment processes is necessary. If microbial levels are too great extra chlorine can be added‚ if organic matter is excessive‚ aeration of the
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the source of contamination in urban areas. Pathogens found in animal waste that is “zoonotic”--capable of being transmitted to humans from animals--are the major cause of concern. If ingested‚ some of these pathogens (including Cryptosporidium‚ Giardia and Salmonella among others) may result in serious illness or even death. Roundworm and hookworm infections
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Food technology FOOD QUALITY: * FOOD HANDINLING & STORAGE: 1. Food poisoning: * Incorrectly ‚ handled or stored is potentially fatal * Food poisoning – occurs when becoming sick after eating food that is poisonous. * Symptoms: * Nausea‚ vomiting‚ stomach cramps‚ severe- double vision. Paralysis. * FOOD DOES NOT HAVE TO LOOK OR TASTE BAD TO BE CONTAMINATED. * Bacteria are single cell organisms‚ rapidly in right conditions. * Bacteria grow and multiply
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