species (the predator‚ measured in copepods/m3 of water) feeds on algae (measured in cells/m3 of water) in freshwater lakes. Assume that the interaction is well-represented by the Lotka-Volterra predator prey model: where r = 1/week a= 0.01/copepods/week f= 0.01 copepods/prey q= 0.1/ week An experimental lake was initiated with 1000 algae cell/m3 and 10 Daphnia/m3. A. The model predicts that at these densities‚ the algae density will initially _________ (3pts) a. increase b. decrease
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– study study of very small living organisms that cannot be seen with unaided eyes Microorganisms or microbes They are virtually everywhere - ubiquitous Types of Microorganisms Bacteria Fungus Yeast & molds Bacillus E. coli Algae Archaebacteria Diatom Dead Sea salt pillar Protozoa Virus Paramecium HIV 1 Why study microbiology? W e have trillions of living microbes in our bodies – indigenous or normal microflora 3% known microbes are disease-causing (pathogens)
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asphalt roofing cannot be ignored‚ since they do require some routine maintenance to keep them in great condition. Be aware of the following things that you should watch out for. Algae and Moss Your roof is susceptible to algae and moss growth if there is a fair amount of shade on it during the day. The problem with allowing algae and moss to grow is that it will cause the roof to become discolored with dark stains that are very hard to remove. The roofing material can also rot due to the moisture that
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Red tides have been an ongoing environmental problem for our ocean waters wildlife. Red tide is a phenomenon caused by harmful algal blooms that occur when colonies of algae (simple plants that live in the sea and freshwater) grow so numerous that they discolor coastal waters (resulting in the name “red tide”). These large algal blooms of toxic producing dinoflagellates (single-celled organisms that are able to form nutritional organic substances from inorganic substances) may diminish oxygen in
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briquettes from algae and waste papers. An unnaturally high abundance of algae blocks sunlight from reaching underwater organisms‚ interferes with living creatures that filter water to gain food‚ and sometimes actually consumes oxygen‚ resulting in fish deaths. Some species of algae even produce toxins which may be poisonous to marine life. On the other hand‚ papers thrown and are not useful anymore also called waste papers can be beneficial to the environment and humankind. The combined algae and waste
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swim in Lake Erie‚ and a couple hours after swimming these symptoms started occurring? Im sure you would not be happy! In the article “See Striking New Images of Algae Blooms in the Great Lakes” by Mia Tramz (Time Magazine) said‚ “Lake Erie is In danger of dying by suffocation‚ said‚and only we can stop it.” Lake Erie has high amounts of algae in the water that can produce poisons and cause people to get sick. The great lakes are an important source to our state as well as part of our country. We can’t
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growth occurs when CO2 and organic carbon are assimilated in cells simultaneously. There are a number of algae that are facultative heterotrophic and prefer an organic carbon substrate‚
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interfere with the cycle such as the algae which is harmful to many aquatic plants and animals. This alga plays quite a large role in decreasing the population of the blue crabs as well as other organisms. The reason this algae is harmful is because it intoxicates the Chesapeake Bay water which leads to intoxicated animals and obviously to the death of the animals. Another way algae interferes with the cycle is that in some occasions there is a high abundance of algae which leads to the blocking of
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term benthos to refer to bottom dwellers. Benthos feed off algae. Examples include many species such as crab rock-fish worms sea slugs sea snails. Sea cucumber Starfish Crayfish coral Some Bottom dwellers clean the ocean floors Bottom dwellers refers to any species of animal or some other organism that lives on the sea floor. Biologists often use the term benthos to refer to bottom dwellers. Benthos feed off algae. Examples include many species such as crab rock-fish
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Protists Protists are a very large‚ diverse group of organisms‚ including the plant-like protists (algae)‚ fungi-like protists‚ and the animal-like protists (protozoans). They are all eukaryotic‚ and most are unicellular. Traditional taxonomy of protists (Kingdom Protista) did not accurately represent evolutionary relationships‚ so the classification of this group is unsettled. Modern taxonomy has rearranged the group formerly known as Kingdom Protista‚ separating the different types of organisms
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