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Q How is the large size of some cephalopods related to the kind of circulatory system they present?
In cephalopods the circulatory system is closed and this provides more pressure and speed for the blood circulation allowing the existence of species with large bodies, like giant squids and octopuses.
In the previous section we discussed the concept of species in detail and concluded that the concept of biological species and Mayr's definition of species have a wide acceptance a
Define the Energy requirement to avoid Underweight problem? The total calorie intake should be 500 to 1000 Kcal in excess of the daily needs in order to result a gain in weight
Simple sedimentation: The process of removal of suspended, colloidal impurities by allowing water to stand undisturbed in big tanks about 5m deep. Most of the suspended particl
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The biomass available for consumption by the herbivores and the decomposers is called : 1. Net primary productivity 2. Secondary productivity 3. Standing crop 4. Gross
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why roots grow downword
Sources of Water Pollution There are natural sources of water pollutants such as mineral ores from rocks, chemicals, from mines and gases from atmosphere. But we will conside
Stretch Receptors Stretch receptors able of perception of muscle tension or stretch are distributed in the connective tissue related with muscles of many groups of animals. Th
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