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Q. Amphibian identity card. How are amphibians characterized according to examples of representing beings, basic morphology, circulation, skin, nitrogen waste, respiration, thermal control and types of reproduction?
Instances of representing beings: toads, frogs, salamanders. Basic morphology: two pairs of eyelids, limbs, hydrodynamic larvae. Skin: permeable and moist, mucous glands. Respiration: pulmonary and cutaneous, branchial in larval stage. Circulation: incomplete, closed, heart with three chambers without interventricular septum. Nitrogen waste: urea, Thermal control: heterothermic. Kind of reproduction: water dependant, sexual, aquatic larval stage and external fecundation.
Q Is the tubular-dorsal nervous system of chordates associated to radial or lateral symmetry? How does that explain the complexity level of the nervous system reached by the verteb
Human Impact on the Phosphorus Cycle Like other biogeochemical cycles, human activities have altered the phosphorus cycle. Human beings mine phosphate rocks and guano deposits
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example of pisces
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Define Sugar as a type of Carbohydrates? This group includes monosaccharide and disaccharides. List down the names of sugars under both these groups and check it out with those
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